Kryptonite DWC 18 Gall Scrog

HI RUI I have a few Kryptonite bushes sharing a 18 Gallon rubbermaid with a net about 8 inches off the top of the rubber maid to spread them out. There are ALOT of tops. Its now day 22, and well, they dont really look like they should. water 70f 6.4ph 900-1100 ppm, nothing Kyrptonite, a beast in hydro usually, doesn't handle. Anyways there is little hair production and now the leafs are starting to cup and have some discoloration from the center of the leaf out. I'm going to up load a few pics for help figuring out this problem. Maybe im a freak plant dictator and theres nothing wrong, then again i've grown this strain in hydro (outdoors tho) and the colas were alot larger, the conditions where also much worse it was in the 50's at night. LMK what you hydro nerds think.

Seems like your ph is a bit high for hydro.

PH is completely out of range, for that stage 5.6-5.8. And for plants that young ppm is pretty high.

thanks for your suggestions.

superstoner1 said:

PH is completely out of range, for that stage 5.6-5.8. And for plants that young ppm is pretty high.

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just curious, what nutrients am i locking out at 6.4 as compared to 5.8ph.

6.2 ph 69F 900PPM, i raised the light a few inches.

grapeoptimo said:

just curious, what nutrients am i locking out at 6.4 as compared to 5.8ph.

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Pretty much everything the plant needs is being locked out at that pH. 6.2 is the highest you ever want to go in hydro and then only in late flower where most of what they want is more readily available at that level. Vegging and early flower plants need the nitrogen and other elements more readily available at the lower end of the range, 5.6-5.8. You asked for help and I'm passing on some good knowledge, from thousands of harvested plants.

Most of my hydro experience has been outside and based around organic regimens, this one is indoor and so far mostly synth. Ill get the PH in check when the lights turn on. thanks.

Look around for a hydro nute ph chart... I think general hydroponics has one on there site.


Most folks would probably despise how I do things, usually I measure out my ph to 6.2. Then when I add nutes I assume the nutes will bring the PH to below 6.

I don't bother to retest after, just put the lid back on and shove it back under the light .

Assuming that will come back to bite you in the ass at some point. Water+nutes+additives then adjust pH last, always.

Right or wrong, I've been doing this the same way for years..... Changed my water yesterday, ph was 5.6..

I don't fix what ain't broke.

tell them ben, and thats what i was doing with the system, the plants stretched good and setup well then locked out. but they are coming back!

Ouch! I am lucky enough to be able to check on them every few hours, so any problems are immediately noticed....