I am quite familiar with GH flora series and use the same Cal mag I think you should see some improvement with the simple increase
There also was algae and blackish mold starting on rockwool so added the black covers
I know nothing about Hydroponics but Iâd be highly concerned with mold.
It looks like you got the nutrients figured out, the mold issues, isnât good. I have advice, but donât want to give wrong advice.
@Donaldj @Bogleg @peachfuzz
Is the rockwool getting wet?
I personally would be inclined to follow the advice and direction of this guy. He is far more advanced than myself.
As soon as your roots reach the water you need to turn off the top feed drippers or else your going to end up with trunk rot and your plant will damp offâŚ
Should they be worried about the mold and algae? I feel like thatâs something that will come up again if they donât do something serious now⌠But I also donât grow hydro
Not if itâs dry
Top feeders now turned off thank you
I re you using hydroguard or flora kleen?
I highly recommend hydrogard and orca if your not running a sterile grow⌠ie hydrogen peroxideâŚ
Im not using either of those but I did try a hydrogen peroxide and water mix and sprayed the rockwool but no effect
Peroxide kills mold and algae but covering reduces it forming and yes turn off top feed a dry top layer helps
Another update the effected leaves are curling up is that concerning or are those just going to die and fall off
Hey @MyDude it helps if you tag someone if you had a question. The affected leaves from the previous issues will not recover. Closely examine new growth, so the same deficiencies donât come back.
From what I can see in the pictures, the new growth looks good.