New to thread looking for advise...

[wilson0072]

Hello. I am new to this forum and was hoping for a little help from you fine ppl. I am currently indoors, and running a recirculating deep water culture system. I use a water chilller so the temp of the the water stays constant @66-67. My plants are about 6 weeks into veg and i am running into some problems w them. I had the ppm around 700-800 and ph between 5.5-6.5 constantly. I am using GH nutrients, and I have added cal-mag, nitrogen, and also tried flushing the whole system (all at different times, this has been going on for a couple weeks now) Can anyone help me troubleshoot these photos please

 

[SnaFuu]

What do the roots look like

 

[wilson0072]

I don't have a pic but the roots are good. Little smaller than i would like but healthy all the same

 

[wilson0072]

Hello. So all the info is the same as above except these set of girls are in week 4 bloom. I'm having some red etching on the fan leaves and was thinking its a P toxicity...? Hoping for some help

 

[wilson0072]

Ppm @1200. Ph is wanting to keep
Dropping though. I get it to 5.8 and the next day it's at 5.3.

 

[makka]

at a guess i would say lockout from to high of an ec/ppm hence the ph dropping or..... something is locking out phos uptake

 

[AbeFroman]

That's a big setup you have there.

That stuff in Veg is really suffering and it's probably from the PH shifting so low and causing lockout. What is that you have in the net pots? Is it making contact with the solution, possibly having an effect on ph?

Also are you adding any Organics to your solution? I always had HUGE PH issues in DWC when I ran anything organic and avoided it at all costs.

The red etching on the last leaf doesn't look like an issue to me. I habe had strains finish with that kind of coloring and found it to be genetic. But it does look like they are/were in a hot solution based off the tip burn.

 

[polishpollack]

You probably don't need the extra nitrogen or calcium, especially if you use all three bottles, but people say you can just use the micro and bloom because the micro has nitrogen in it. If you're using all three bottles and extra nitrogen, you're overdoing it. Can't make comment on you pH issue, not clue what that is. unless the plants are taking up so much water that they take up more water than fertilizer, which might cause your pH to drop and ppm to go up. but that's just a guess. I don't know what the problem is there.