Who Doesn't Change Their Reservoir For Entire Grow?

[Abja Roots]

I used to change my resis out every week.

I've gone to not changing it at all during flower and have not noticed a difference. I just add nutrients and then ph the resi.

Not really sure if it makes a difference. My thought was that if you had good biology, no visible deficiencies or toxicities, why would you swap it out and replace it with basically blank water or chloramine/chlorine infused water, without any active biology.

I run H & G Coco A + B. Which is a synthetic nutrient and so I can't really speak on active biology anymore. My primary reason for swapping out the resi would be to basically reset the system if I was seeing some issue.

Good question...

I live in the city and having read Babba's post was compelled to say that if you live where the water is active, I would swap it out as well. City water is often questionable.

 

[CannaCompulsory]

in all seriousness

in all seriousness

I change the water when the plant asks me to. Once or twice in a 20 week grow.

i guess your growing longer flowering varieties? and do they ask politely or SHOUT, change the friggen water?

..
and since my plants stopped talking to me ever since they caught me with a poppy...

 

[GrowerGoneWild]

Some people do not change out their h20 in their reservoir for the entire grow, just adjust PH and add to nutrients.
What do you do?
I've not changed and just add to and PH, and cant really tell if res changes do anything except waste more water and expensive nutrients!
Opinions?

Depends on the rez size, I guess its possible..

I'm not sure how some people do this, The 2 week stretch feed formula I use is high in N and not usable for blooming.

I could reduce changes during bloom. when I just add a PK booster.

But as far as the last few days I have to dump... organic or salt base nutes I always flush. Or try to anyways.

 

[CannaCompulsory]

bacon, donuts...2 months

bacon, donuts...2 months

Once a week. Its the nice fresh water here that works the magic.

it's funny, there is no real consensus here, surprising also.

My first thought was to go with "bacon"...

yea sorry bout that. but giving food options to ganja-heads tends to throw off the very scientific data question

 

[CannaCompulsory]

I'm not sure how some people do this, The 2 week stretch feed formula I use is high in N and not usable for blooming.

I could reduce changes during bloom. when I just add a PK booster.

But as far as the last few days I have to dump... organic or salt base nutes I always flush. Or try to anyways.

yea, always a small 30 gal res here. I thought about the higher N values screwing with flower also, but felt that was pretty much depleted by plants, waterups etc by the time bloom is introduced.
AND OF COURSE I agree fresh water for the last week or however long it takes for the remaining fan leaves to yellow, if possible. Flushing is necessary, but again, know some people that dont do this either

 

[medi-useA]

My experience tells me th@ the smaller the res the more likely th@ it will have to be totally changed out sometime during the grow....

when I grew DWC in a 20L bucket I HAD to change out the nute solution often....it just got too toxic too quick.

Now th@ I have an 80L res...I do not change out the res...I try to time it th@ I let the res get low before changeover to 12/12, top it up with flowering nutes and switch...

A larger res is a LOT more forgiving...

muA

 

[thc43]

i use my 200litre res every 3 to 4 days but only clean the pumps, air stones and the res bucket between grows.. At one time i was pretty much a cleAn feak had to clean everything spotless every refill..


Run to waste grow in coco i guess you could do top ups but who want to check there grow more than once twice a week, i know i dont.

 

[GrowerGoneWild]

I'd like to find somebody's method for not changing nutes.

I dont like wasting stuff either, but I need good performance from the nutes. Its too my advantage to save money..

Right now I can only get about 7 tank doses out of a gallon of PBP.

GH, suggests 2 week dump. I'm also looking at one feeding schedule suggesting PBP.

Secondly, how do people deal with assorted buildup in their tanks?.. Minerals, deadroots. etc..

Now I'm totally ok with something like a mom bucket. That stuff pretty much stays the same, I just add water, and every so often, mebby 60 days I would refresh with new nutrients.

 

[GrowerGoneWild]

A larger res is a LOT more forgiving...

muA

Very true.

At minimum I factor in 1 gal per plant in whatever. aero/dwc/e&f.

Bigger is better, but more expensive to dose. But its soooooo easy to maintain.

Its a trade off.

 

[GrowerGoneWild]

I thought about the higher N values screwing with flower also,

Well I suppose its possible..

How do you deal with it then?.. Say tank PPM"s are around 1500.

Do you simply add water to drop it to say 1000PPM and then raise it with say something like GH's (bloom) 0-5-4 to raise the PK value?..

This might not be possible for some of us using 1 part nutrients.

I do believe Ive tried this, I simply added like I mentioned above, and the flowering was slow to start, and was taking on more leaf than buds.

 

[PuReKnOwLeDgE]

I run veg nutes until day 14 flower, at that point I change over to flower nutes, then one more change at flush

 

[GrowerGoneWild]

I run veg nutes until day 14 flower, at that point I change over to flower nutes, then one more change at flush

Yeah me too.. they get N starved if ya dont.

But after the 2 week stretch..

This reply is not really directed at you pure.. just throwing this out there.

I could run a progressively hotter bloom fert.

So for 4 weeks, (assumed 0 PPM on water)

Start out with a basic bloom nute 1500 PPM
a few weeks in add the PK booster. 1700 PPM
Add PK ripening formula 1900 PPM

Drop PPM (just add water) Nutes
just for PH balance 1000 PPM
1 week flush

Can be adjusted for longer strains..

What cha think?

 

[PuReKnOwLeDgE]

sounds simliar to what I do, I come into flower around 1.5 EC, knock em up to 1.8 to 2.0 depending on strain, drop em down back to 1.5, flush

 

[GrowerGoneWild]

sounds simliar to what I do, I come into flower around 1.5 EC, knock em up to 1.8 to 2.0 depending on strain, drop em down back to 1.5, flush

Cool.. Yeah, I'm trying to save some bucks on nutes..

If I can eliminate one change, that would be great. As long as yield doesn't suffer..

 

[GrowerGoneWild]

i found the bicarbonates biult up in the pots of hydroton as well as in the tank ,to a point where you have to change the tank at 4 weeks or your acid takes the cf figure so high you cannot add nutrients .

Gawwwdamm..

That explains why I have PH problems in my flood trays.. I hardly every change out the nutrient in those, I run those for long periods without change.

I thought it was the hydroton contaminating the rez, I just didn't understand how it was doing it.

 

[cannaboy]

I would

I would

Run 2 wasste and feed the veg patch or the lawn..

 

[Classyathome]

Oh ya - and I have never tested ph or ppms. No meters, no test strips.

I run nutes slightly light from specs, water treated to remove the nasty heavy metals, etc., w/ aquarium treatment. Water sits more than 48 hrs. before use.

Small rez - less than 5 gallon.

I watch the plants - they tell me what is what...

 

[V1AAA]

i havent read the whole thread, but i will say

everytime they get the fresh stuff (no mix of old and new) they shoot up

those running nft try this...

if you have 2 tanks, change the water in 1 every week without fail

the other just fill it up as normal

you will notice on the water change day, and the day after the plants go for the sky

where the other tank will just grow out at a 'normal' rate.

try this in mud as well, but mud takes longer to show.

i have 2 res. 1 is 10 gallons/50 litres for us uk'ers, and another the other is 120 litres.

lets concentrate under 2 lights. both 400w. lets say 4 plants under each. mix up the old with the new in the bigger res, and change out the smaller 1 every feed.

i measured everything from room temp in the day and at night. ph was the same for both sides of the room, both res. water temp was the same, heck i even moved the plants from one side of the room to the other, and found the plants feeding from the smaller res were doing better.

i will add, that when picking out my clones i take them 1 at a time and try to have a mix under each light. so the plants are pretty even on 1 side of the room to the other

also, do you really want to be smoking mj with water thats been in the res for weeks on end, wheather you mix it up or not? some say its all about the flush, but i am a fussy guy, and i wont go out like that. sorry

 

[groady-ho]

back when i ran dwc, i changed every 2wks regardless..altho during veg i never changed it..they didn't seem to need it..idk, i had a thing about keeping my res. and buckets clean..

 

[Scrogerman]

i havent read the whole thread, but i will say

everytime they get the fresh stuff (no mix of old and new) they shoot up

those running nft try this...

if you have 2 tanks, change the water in 1 every week without fail

the other just fill it up as normal

you will notice on the water change day, and the day after the plants go for the sky

where the other tank will just grow out at a 'normal' rate.

try this in mud as well, but mud takes longer to show.

i have 2 res. 1 is 10 gallons/50 litres for us uk'ers, and another the other is 120 litres.

lets concentrate under 2 lights. both 400w. lets say 4 plants under each. mix up the old with the new in the bigger res, and change out the smaller 1 every feed.

i measured everything from room temp in the day and at night. ph was the same for both sides of the room, both res. water temp was the same, heck i even moved the plants from one side of the room to the other, and found the plants feeding from the smaller res were doing better.

i will add, that when picking out my clones i take them 1 at a time and try to have a mix under each light. so the plants are pretty even on 1 side of the room to the other

also, do you really want to be smoking mj with water thats been in the res for weeks on end, wheather you mix it up or not? some say its all about the flush, but i am a fussy guy, and i wont go out like that. sorry

This is completely true & is the best method for MASSIVE yields.
dont want BIG yields then dont change out, i think people are just lazy and looking for an easy way out when there aint 1-its as simple as that.............Respect Bruv................Scroger
The Cost in nutes is the small price we pay for Maximum Yield! Simple!