Presh filter for 4x4x6 tent.. stinkiest $hit

[Erliqin]

My plants didn't like growing in a wind tunnel.
Someone read advice to exchange air every 3-5 minutes and started spreading around 3-5x per minute..
I ran it like that for years before wising up just recently. My plants have never been happier.
You're better off spending the extra $$ on cooling your intake air instead of getting bigger fans and filters. Too bad it took me so many years to realize it.

my intakes are of cool air, its a couple of ducts sucking air directly from outside. the exhaust is directed to the outside too.
how much air do you exchange now?

can you provide numbers or facts? I mean maybe how much CFM youre pulling now and what size your grow? thanks in advance

 

[Erliqin]

some thoughts:

About the fan/filter combo size, I went overkill but it works fine because the fan comes with a speed controller, slowing down its speed.

But what made me realize with results and stuff, was that before I had my plant in the outside, and after watering, the top layer of soil took 2 full days to become dry.
And now with the tent and fan speed set at 60% or higher, will dry the top layer of soil in like 12 hours the most. I have 2 small fans circling air around inside the tent, but I turned one of them off to see if it was the cuplrit of drying the top layer of soil so quick and no, same thing.
That made me realize the wind tunel was too much overkill, now I have the fan speed at night set at 30%, and will see what happens. During the day will be no more than 60%. will check it. peace

 

[CoCoSativas]

My plants didn't like growing in a wind tunnel.
Someone read advice to exchange air every 3-5 minutes and started spreading around 3-5x per minute..
I ran it like that for years before wising up just recently. My plants have never been happier.
You're better off spending the extra $$ on cooling your intake air instead of getting bigger fans and filters. Too bad it took me so many years to realize it.

No doubt. Guys are seriously confused on how to use fans and stuff. Really guys think one giant exhaust for the whole grow and look they are soooo pro... lol grow room designe is complicated.

Yeah air needs to be exchanged a few times per hour not every 5 mins. Lol good one with the wind tunnel referance. Too bad one of the above posters is trying to advocate a silly way to waste mony... you are right no need for the wind tunnel...

 

[CoCoSativas]

Coco, nice pic that one above, nice sativa. Are sativas medicinal just like indicas?

They are great for anxiety and depression. I find the strong ones pretty effective for pain relief. Really nice during the day so you arent passing out all day and shit...

 

[Erliqin]

They are great for anxiety and depression. I find the strong ones pretty effective for pain relief. Really nice during the day so you arent passing out all day and shit...

then they are full medicinal without thecouchlock. thats a win.


I have2 sensistars, one full indica monster, the other smaller with less yield but sativa. different bouquets, the indica has the citrus heavy indica smell, the other smells sweet sativa,like haze, it smells jst like the nebula sativa pheno, this one is frosty as heck, one of the whitest strains ive ever seen,like the nebula crazy trichomed white pheno. crazy $hit.

 

[LEPgrow]

I really enjoyed last few pages of this thread. I'm one who made mistake of overkill. I also understand difference in cooling vs fresh air needs. Perhaps someone here can help me remedy this before I even start fucking shit up.

I have a 3x3 and 5x5 tent. Not sure what one I'll run or if I'm able to safely run 2 of them or not. Unfortunately, I think I'll be limiting my op to 1kwh. I have 8" Phresh Filter 950cfm. Also 8" hyperfan. I can see this is overkill. My exhaust run is approximately 25'. This is for respiration needs of plant. A/C can be set to whatever I want.
Unfortunately I think I did a poor job matching things for a tent as I bought stuff for a 200w room. But be it as it is i am now in tent.
I am using an el2 controlled gavita pro and also have 2 plasmas at my disposal. I can run 2 lep and gavita at pro at 600 @400w in 5x5 or I can run plasma and dimmed gavita pro and an lep in 3x3. Don't care about wasting money as much as I care about optimization. Should I use my big filter and get a smaller fan for my 5x5? Realistically A/C will be able to keep air as low as 70f. In home. Or would I have more optimal set up with 3x3 and go get another filter and fan? Filter is to large for 3x3 tent.

 

[Erliqin]

I really enjoyed last few pages of this thread. I'm one who made mistake of overkill. I also understand difference in cooling vs fresh air needs. Perhaps someone here can help me remedy this before I even start fucking shit up.

I have a 3x3 and 5x5 tent. Not sure what one I'll run or if I'm able to safely run 2 of them or not. Unfortunately, I think I'll be limiting my op to 1kwh. I have 8" Phresh Filter 950cfm. Also 8" hyperfan. I can see this is overkill. My exhaust run is approximately 25'. This is for respiration needs of plant. A/C can be set to whatever I want.
Unfortunately I think I did a poor job matching things for a tent as I bought stuff for a 200w room. But be it as it is i am now in tent.
I am using an el2 controlled gavita pro and also have 2 plasmas at my disposal. I can run 2 lep and gavita at pro at 600 @400w in 5x5 or I can run plasma and dimmed gavita pro and an lep in 3x3. Don't care about wasting money as much as I care about optimization. Should I use my big filter and get a smaller fan for my 5x5? Realistically A/C will be able to keep air as low as 70f. In home. Or would I have more optimal set up with 3x3 and go get another filter and fan? Filter is to large for 3x3 tent.

get the smaller fan.

Iam running this combo, 400CFM phresh 6" paired with the Hyper fan 315CFM, my tent is 4x4x7.

Good thing is the Hyper comes with its own quality speed controller, I have it set at just above the minimum wich is 35%, so its full time around 40% aprox. The plants like it, they don't get dry and they smell great (inside the tent). The filter works, I think is good overkill peace of mind (speed controlled to the min.)
It works wonders and I have plenty of peace of mind, It can dry the harvest inside the tent with the neighbors next to it without noticing.
The exhaust fan is pointed directly to neighboor's apartment windows, so it can't escape the most minimum molecule of oudor or else security breached crap out.
Coco's posts are 100% correct in the last page. period. I would use the presh filter calculator for the optimum CFM rating for your tents.
I think the right formula is that the growroom or tent needs the very small exhaust airflow so the plants just breath enough. Avoid at all costs the air tunel. g/l

 

[CoCoSativas]

get the smaller fan.

Iam running this combo, 400CFM phresh 6" paired with the Hyper fan 315CFM, my tent is 4x4x7.

Good thing is the Hyper comes with its own quality speed controller, I have it set at just above the minimum wich is 35%, so its full time around 40% aprox. The plants like it, they don't get dry and they smell great (inside the tent). The filter works, I think is good overkill peace of mind (speed controlled to the min.)
It works wonders and I have plenty of peace of mind, It can dry the harvest inside the tent with the neighbors next to it without noticing.
The exhaust fan is pointed directly to neighboor's apartment windows, so it can't escape the most minimum molecule of oudor or else security breached crap out.
Coco's posts are 100% correct in the last page. period. I would use the presh filter calculator for the optimum CFM rating for your tents.
I think the right formula is that the growroom or tent needs the very small exhaust airflow so the plants just breath enough. Avoid at all costs the air tunel. g/l

Thank you. Im not trying to be a fuck stick I just want to steer you guys away from a wasteful mentality. The store always says overkil because filters and fans both get more expensive per size. So they make more money on both items per size. FUCK THAT dont waste dollars. Its a waste of power, money and to big a filter can make a tent colapse plus as its been pointed out dope plants dont grow in a wind tunnel.

Look here im a hvac pro, I own a construction company and can build a house from the ground up with my guys. I know alot about airflow, not just for houses but in greenhouses, warehouses all sorts of commercial spaces. Ive done hvac in a bowling alley man the design of this place was a pain in the ass. Anyway I move air like a pro because I am one. I dont have any vested interest other than helping others grow better. Sorry to those ive been rough around the edges with im 25 and I employ guys twice my age so im just used to having to be... a little rough.

Honestly you would be surprised the myths around fans, filters and airflow. They all last the same amount of time the reason you use a bigger filter is to match cfm. Oversized filters just catch more dust waste lots of bucks... my little tiny can 33 works in a 4'x4' tent (square meter) the store was like put a can 60 in there. Dude I own one for my bigger op in boxes, but look at the weight the tent can hold the filter was 15 pounds over capacity. The shops are guys that say boost your bulbs the last week. Why? Dont you know fall light gets less intense toward the end where is the science? Its not they want you to burn out bulbs faster and buy more. Just like they want to sell dirt over coco because coco can last up to 3 years, most throw dirt every cycle, I did. Plus coco is half the price, fuck me... I dont reuse it because its so cheap and its my preferance but I hear lots of people say they love reusing coco...

Just match the proper stuff to the space guys. Overkill in food, light, water, airflow are all a detriment. Too much of a good thing right? Its called killing with kindness I know your intention is good but comercial greenhouses dont do overkill because its a waste of bucks. Save money so you can afford more shit like useful addatives, bulbs, or upgrades. If you buy something big that can be slowed down knowing you are going bigger soon sure, its universal and that saves but buying overkill for the sake of it is not worth it amd telling people to do it rubs me wrong and ill stand my ground and hopefully save guys out there some bucks to go somewhere useful not down the shitters...its my way of caring.

 

[CoCoSativas]

I really enjoyed last few pages of this thread. I'm one who made mistake of overkill. I also understand difference in cooling vs fresh air needs. Perhaps someone here can help me remedy this before I even start fucking shit up.

I have a 3x3 and 5x5 tent. Not sure what one I'll run or if I'm able to safely run 2 of them or not. Unfortunately, I think I'll be limiting my op to 1kwh. I have 8" Phresh Filter 950cfm. Also 8" hyperfan. I can see this is overkill. My exhaust run is approximately 25'. This is for respiration needs of plant. A/C can be set to whatever I want.
Unfortunately I think I did a poor job matching things for a tent as I bought stuff for a 200w room. But be it as it is i am now in tent.
I am using an el2 controlled gavita pro and also have 2 plasmas at my disposal. I can run 2 lep and gavita at pro at 600 @400w in 5x5 or I can run plasma and dimmed gavita pro and an lep in 3x3. Don't care about wasting money as much as I care about optimization. Should I use my big filter and get a smaller fan for my 5x5? Realistically A/C will be able to keep air as low as 70f. In home. Or would I have more optimal set up with 3x3 and go get another filter and fan? Filter is to large for 3x3 tent.

You cant do both tents really well. Do the 5x5. That tent is a 1 k alone though you can stretch your op to 1400 watts a 400 is perfect in a 3x3...

If you need help figuring out if your system can handle 1400 watts ill help you figure it out. Its all about the amps...

 

[LEPgrow]

I am using 2 plasmas for veg. Then 1 plasma and 600 for flower.

 

[LEPgrow]

So what about heat? 600w needs 250cfm I believe for cooling purposes

 

[LEPgrow]

Yes Cocosativa, I'd appreciate that.. it's not only amps it's also an electrical usage deal though.

 

[LEPgrow]

So my bill is about 75 a month. I am on time of use tiered with plan so I could use it mostly at night for lower rates.

 

[Erliqin]

years ago I had a small cabinet with a 250HPS, it was like 2x2x3.

For exhaust I used 2x 120mm pc fans, and the intake was 4x 40mm small pc fans.

The plants grew the most frostiest and had the sick smell issue lol. It grew incredible with those small fans that worked incredible good.

 

[LEPgrow]

Or is better to use plasma and dimmed down 600 for veg and plasma and turned up 600 for bloom?

 

[CoCoSativas]

Or is better to use plasma and dimmed down 600 for veg and plasma and turned up 600 for bloom?

Use them both at the same time through both phazes for amazing results I hear. Otherwise my choice would be veg with plasma and flower with the hps. I use hps not though so thats where my mind goes.

Om me and ask what you dont understand about electrical ill help you out. I can wire anything that goes in a house, or grow op.... also do warehouse wiring but less offten. Not big on heights...

Dont dim hps. Screws the spectrum use your lights at intended wattage. Select a matt is silly unless you buy say a gavita that does 600/1000 type of deal and plan to upgrade in the future...

 

[Erliqin]

Coco:

Iam doing fine with a magnetic ballast 600w, but If I wanna upgrade to a Gavita digiballast, should I get the 600 or a 1000 and dim it? I plan on multiple plants in the tent, and getting a proper cooled reflector.

 

[CoCoSativas]

So if you plan to go from a 600 to 1000 later do the 1000 digistar. It does 600 and 1000 and a boost I think but dont quote me I own 600s.

Ith gavitas do not dim bulbs. Get the apropriate bulb when you change dont dim a 1000 to 600 it screws the spectrum. With gavitas they do what they say so you really should use the corresponding bulb. Let the dimmers dim. Those guys arent all that bright... I dont have time to do a article on lighting but trust me use the right bulb for wattage output. Dim users will say it makes no difference. Take my word im not a fucking idiot and I can put together a professional grow space it males a huge difference to the light you output. My area of greatest expertise in growing is grow room design. Im a good grower and grow excellent dope, but I still have lots to learn ive never tried any recerculating hydro, ive got 6 years growing experience but I know im not a pro grower but I am a construction professional who has setup warehouses, professional greenhouses, and countless grows for myself and others. Ive used full basements, full bedrooms, and now im using a tent.

Anyway heres something to think about. I used to only use 1000 watters over a 5x5. Now I do a 4x4 with a 600 watt system. I am using 60% of the power per square I was before and im having less heat issues, less light stress, my plants are proforming better overall. I used to put 6-9 plants in a 5x5 I just put 9 big ass sativas in a 4x4 and probably yielded better than I have with 9 plants under a 1000 watt system.
I addoped the european style they use alot of 600s over there and I couldnt be happier. Ive got a nice wing making good use of my light. Thats the key really, using the proper reflector, high quality bulbs and ballast to produce the most photons for your plants, I use wings or parabolic reflectors because the parabolic curves dispersed the light the best, and with my big open sativas, light dispersion is key ragher than more light.

I guess I better stop blabbing im so ripped off of my harvest. Anyway I guess what im saying is maybe rather than trying to light up 4 square meters with 1ks and going overkill that way, look to the more humble methods of growing. It humbled me. Do rows of 4'x4's with 600s. If you are really set on using 1 ks one day I guess you can but if you plan to stuck to tents remember cooling thems a bitch. Another thing to think is if you stay with multiples of twos like 2x2 veg and 4x4 for flower or 4x4 for veg and 4x8 for flower its easier to keep the lights universal. Right now I have the first set but plan to go up bigger to 1 or 2 4'x8's, I can go grab the bunch of 600s I have in my closet and they are universal for my grow room concept. I bought a bunch with a bigger plan but due to low vacancy in my city I had to take a appartment rather than house as I originally planned so im doing the tents. Anyway so I do the 600 per square meter, it works great for me and theres countless benefits I could talk about with this plan. I dont plan to ever use a 1k again.

Im planning on trying a bml sypder in my tent next year. Im going to start growing for profit again, so im going to run 4 square meters for sale amd one for me, the one for me ill test the led... if I like the led stuff enough then I might upgrade everything to led. Heat is such a pain in the ass and paying for more hvac and bulbs and stuff adds up so for me rather than thinking bigger hotter systems im trying to find alternative ways to grow, draw less power, create less heat. I did the math over ten years, assuming the ballasts last that amount of time, and you bought adjust a wings that last that period, bulb replacement for hid ends up costing the same as led. When you factor not buying a air conditioner or powering it, plus the time installing it the noise, man its easier to look to the future. Im not saying just go buy a led because leds are stupid complicated and thats a crazy topic but so is hid. Look at all your options but rather than looking to draw more power look at something that produces more useable light for your plants for less power... or look to design your room where you use less watts per space if possible. Do so buy using good quality gear, hanging your lights at the right height (depends on wattage, bulb used and reflector type) and using the right size bulb for a space... 3x3 use a 400 mh or hps, and 4x4 I use a 600. If you have to have a 5x5 (maybe you grow really wide indicas that need a 1ks deep penetration and a wider space for the wider plants... really just do grow reaserch or ask a experienced grower.

Lol sorry I kept yakking. Heres some pretty pics from yesterdays harvest, super lemon haze. I got a great yield (im sure over 450 grams from 4 different strains in one space but all are similar structure, height and finish time so its not like it was all weird in there). Grow room design guys do what you have to. Take into account what you grow (structure, size, density) your electrical system, your overal heat in the space like what season is it hot in your location? Heats a bitch amd overheated plants yield like shit, you get a better yield off a smaller light with not heat fucked plants than the ones that got blasted with mad heat and lights...

 

[CoCoSativas]

More super lemon haze pics. They were some happy plants. Sure glad I addopted a different method than I used to use...

 

[CoCoSativas]

Kali mist



Strawberry haze