Philips 315w CDM Elite (CMH)

[krunchbubble]

I have run Gavitas for years now. IMO there not suited for grow rooms with less than 12' ceilings. They need to be mounted at 12'. I will change my flower room to 12 of these or a mix of these and LED's that KB is testing. .

even the 6/750 DE?


basically trying to get another 4x8 tent setup for flower.. if i go from 6 1000s.. to 8 6/750sDes .. 2 per 4x8 tent. i think i could save eletricity and put out almost the same yields.

The Gavitas in particular need the space...

But other DE systems work fine for lower ceilings. Im running DE's in 5X5 tents and getting 1+gram a watt, but at the 600 and 750 watt settings...

 

[Hammerhead]

I do the same set to 650w.. I cant use 800w or more without some king of issue. That's with them set at 10'. I would not buy another. I have got stable plants to toss stress naners with the lights set at 1kw under gavita. Same 1kw none DE works with no issues.

 

[rives]

I been cooking under my two moguls LOL they are intense. I been putting sunscreen on before I go in any more.

I bet.

I know enough about UV to appreciate some filtration, and will happily swap the potential for marginally better pot for postponing cataracts a while longer....

 

[megayields]

...this thread just make me feel so damn dumb.....trying to get caught up.......

 

[megayields]

[URL=https://www.icmag.com/ic/picture.php?albumid=61288&pictureid=1595595&thumb=1]View Image[/url] Sun System LEC is working well!!

uhhh well fuck me....dyaaaammmmnn

 

[McKush]

Hi PF/HH -

I've run Epap & Gavita with 10' room with no issues and my fixture is not pegged to the ceiling either so i don't think that you need 12' ceilings, but with DE high ceilings are better for sure. Its just not been my experience at all that 12 is needed. i don't get any bleaching until about 24' from the fixture. my plants are usually vegged pretty well prior to flip, 20-30", so they start out fairly big.

 

[Hammerhead]

I always have issues. I'm not the only 1. There are a few I know having the same issues I see. It makes the plants look like shit. I still get decent yields and the quality is unaffected. I dont like looking at ugly plants. The only way for this to go away for us is they need to be higher. Vegged for 60-90 days. I grow big plants most are 6-8' tall so the lights can get as close as 24" at 1kw. It doesn't work out well.

 

[Lungy]

He sent me two ballasts and two mogul lamps even though I cancelled my order 2-3 months ago. He came through and the shipping was A+. Sad that he doesn't partner up with a major distributor and handle things more efficiently that way...

My order of 2 took 8 weeks and a replacement bulb has yet to arrive 6 weeks later. My initial order was made in January. Just wish he would answer emails

 

[willowz]

Does anyone know why the CMH bulbs are so much more efficient than HPS and MH bulbs? I'm kinda interested in the physics behind it...

Any ideas about the future of CMH or other lighting solutions? I'm apprehensive to invest more in CMH if there's something better coming out soon, given how crazy fast technology progresses.

 

[Unclecrash]

Great Service

Great Service

ordered two ballasts from the link I posted, on saturday and they are here today at 2:00 now that is how I like my orders online. In todays market there is no excuse why you should not see you bought items in more than three or four days. And thats priorty mail. Tired of lazy people who promise the world but have trouble shipping a box. It is very simple !!

 

[dank.frank]

Okay, 315 CMH fans...

I used to run a 400w HPS in a 2' x 2' area. Honestly, couldn't tell a difference between flower quality in that setup vs multiple 1k's in centered over 4' x 4' footprints. Obviously, various limiting parameters considered to achieve that.

However, with the new technology that has been coming out - and after lurking this thread and several others quite heavily.

What I am considering is an interior space of 28" wide x 52" long -Reflectix or Orca on the walls with 2 of the 315 CMH Cycloptics.

This should allow me enough room to rotate 4 plants out every 3wks on a 9wk rotation cycle...12 plants total in the space. I used to pull between 6-9oz depending on the strain under a 400w in a similar space.

If the new CMH tech is "comparable to a 600w" that means 3x3 and the ability to pull anywhere from 12-20oz depending on the strain.

If I had the space, I'd be spending the money on two 1k gavitas and going for 3# per light - but space is my biggest limiting factor - followed immediately by noise pollution. The fans and A/C required to cool larger lights is not an option. This forces me to look at a smaller form factor, even though the cost of the lights is virtually the same.

My best example to follow at this point has been Ez Rider, although, his set up is much different, it has given me a proper perspective of what the lights are capable of.

NOW - thoughts, ideas, input, etc...

I want to hear the flaws in what I am considering. Treat me like a noob.

Thanks for everyone posting on this topic. It's been great to follow and read along and learn some of the more technical aspects of lighting. I can't say I've been this excited to grow in a small foot print in a long time. NEVER thought I'd give up 1k's.



dank.Frank

 

[timmur]

Okay, 315 CMH fans...

I used to run a 400w HPS in a 2' x 2' area. Honestly, couldn't tell a difference between flower quality in that setup vs multiple 1k's in centered over 4' x 4' footprints. Obviously, various limiting parameters considered to achieve that.

However, with the new technology that has been coming out - and after lurking this thread and several others quite heavily.

What I am considering is an interior space of 28" wide x 52" long -Reflectix or Orca on the walls with 2 of the 315 CMH Cycloptics.

This should allow me enough room to rotate 4 plants out every 3wks on a 9wk rotation cycle...12 plants total in the space. I used to pull between 6-9oz depending on the strain under a 400w in a similar space.

If the new CMH tech is "comparable to a 600w" that means 3x3 and the ability to pull anywhere from 12-20oz depending on the strain.

If I had the space, I'd be spending the money on two 1k gavitas and going for 3# per light - but space is my biggest limiting factor - followed immediately by noise pollution. The fans and A/C required to cool larger lights is not an option. This forces me to look at a smaller form factor, even though the cost of the lights is virtually the same.

My best example to follow at this point has been Ez Rider, although, his set up is much different, it has given me a proper perspective of what the lights are capable of.

NOW - thoughts, ideas, input, etc...

I want to hear the flaws in what I am considering. Treat me like a noob.

Thanks for everyone posting on this topic. It's been great to follow and read along and learn some of the more technical aspects of lighting. I can't say I've been this excited to grow in a small foot print in a long time. NEVER thought I'd give up 1k's.



dank.Frank

Greenbeams and Orca. Don't bother with the reflectix.

 

[dank.frank]

Any other thoughts or concerns or advice to be applied to that?

What I'm really looking for is to have the ability to "live" on rosin. I'll need more flowers than would be typically expected as necessary to make this possible. I NEED to have 8oz bare minimum monthly off the 4 plants. (genetics are capable of 2.5#+ under standard 1k - so that is not a limiting factor)

I'll dedicate a bigger space and run a Gavita 750w Flex if the Greenbeams can't fill the need.



dank.Frank

 

[KingSkillz]

How long do you typically veg dank.frank?

 

[dank.frank]

It depends on many factors. Stretch considering desired distance from the lamps...and I prefer to use stationary lamps and to let the plants grow into them as opposed to moving the lamp daily to keep it a specific distance.

I could veg something like Bubba Kush for 8wks...something like SSSDH flower after 2wks.

In this particular scenario - everything is on a 3wk rotation. 9wk flower period 3wk intervals. 3wk in clone setting, 3wks in veg, then transition into flower.

Plants will be flowered at 14-16" - going from 1 gallon veg to an organic soil bed. Final harvesting height will be around 4ft. Plants will be manicured so the canopy is about the top 18-20", based on what I expect light penetration to be on a lower intensity bulb. I need no less that 2oz per plant - figuring plants topped, 5-6 colas left to form - about 10-18 grams per cola. Figure a 18-24" distance from the bulb - and the lights hang at 6 ft. Above the lights will be fan and filter, etc. I have 7'6" vertically to work within.

Mono-cropping the Lazy Lightning clone [(Chem D x Sour D IBL) x (SSH x Chem D IBL)]:

dank.Frank

 

[Unclecrash]

LOL sitting here vaping some smelly ass Chem Dawg, lookin sweet Dank Frank

 

[Unclecrash]

Rev.B Rev. C Rev. E

Rev.B Rev. C Rev. E

Can anyone tell me what These mean ^^^^ I just picked up two more ballasts they have an almost orange label my other two are an off yellow and they are running the long cords without a problem, curious how I tell if these can handle the length? I guess I could just try and see if they fire. A pic of my Critical Kush under a 315 mogul. Heavy dense buds.

 

[timmur]

Any other thoughts or concerns or advice to be applied to that?

What I'm really looking for is to have the ability to "live" on rosin. I'll need more flowers than would be typically expected as necessary to make this possible. I NEED to have 8oz bare minimum monthly off the 4 plants. (genetics are capable of 2.5#+ under standard 1k - so that is not a limiting factor)

I'll dedicate a bigger space and run a Gavita 750w Flex if the Greenbeams can't fill the need.



dank.Frank

I took a run at modeling your square footage, the 2 Greenbeams, and Orca and it predicted that you'll be around 675 PPFD at the 24" distance from the fixture. I would think that amount of light would get you where you want to be. Take that with a grain of salt however as the model is a built on regression of published models from Cycloptics that were variable in terms of room reflectivity and bulb used (930 and 942).

If you've seen EZ's light testing results then you realize how critical reflectivity is to getting the most out of the Greenbeams. If you can, cover the ceiling and the floor (depending how much floor is actually exposed) with Orca or other diffuse reflective material.

Regarding expected yield, I think tenthirty was getting 1.3 or 1.4 GPW with Greenbeams. If nothing else, I would think the GBs will match the 1.13 GPW the 1kw light was giving you.

 

[rives]

Any other thoughts or concerns or advice to be applied to that?

What I'm really looking for is to have the ability to "live" on rosin. I'll need more flowers than would be typically expected as necessary to make this possible. I NEED to have 8oz bare minimum monthly off the 4 plants. (genetics are capable of 2.5#+ under standard 1k - so that is not a limiting factor)

I'll dedicate a bigger space and run a Gavita 750w Flex if the Greenbeams can't fill the need.

dank.Frank

Good to see you stop by Frank.

I don't think that you will have any problem with yield. I average 3.5-4 ozs per plant in a 9-10 week flower cycle, and I don't run anything considered to be high yielding.

I don't see how you are going to fit 12 plants ranging from 16" - 4' into a space that is 28" x 52". That is less than double the size of my 30" x 30" tent, and 3 plants is about as many as will fit comfortably (I've run 4 numerous times, the yield winds up roughly the same and it is FUCKED to work on). Oh, and I don't usually go over 36" tall unless I screw up.

If I ever get it finished before I die of old age, I'm in the process of building an area that is 30" x 56". In playing with footprints, it looks pretty similar to the tent, doubled. That is, a maximum of 8 plants with 6 probably being a good bit easier to deal with.

The most tangible benefit of the Greenbeams is the reflection off of the walls. With that many plants, and that size, it seems to me that sidewall reflection isn't going to be an issue - it going to be wall to wall plants.

 

[rives]

Can anyone tell me what These mean ^^^^ I just picked up two more ballasts they have an almost orange label my other two are an off yellow and they are running the long cords without a problem, curious how I tell if these can handle the length? I guess I could just try and see if they fire. A pic of my Critical Kush under a 315 mogul. Heavy dense buds.

The below post will give you the date codes for when the circuitry changed that requires shorter cords. There are several other posts in that area about it.

https://www.icmag.com/ic/showpost.php?p=7365747&postcount=1779