Hi, it's me again. My plants seem to have the same problem that they had in this thread, only it's worse. After I thought I resolved the problem the last time, the plants looked great for a while. Now the yellowing has very rapidly progressed up the plant and the sugar leaves are showing symptoms.

Since the conclusion of my last post in the problems area, I have given them two waterings. The first was plain water with 1 tsp per gallon unsulphured molasses. I noticed the runoff then was in the low 6 range. So on the second watering I added 1 tbsp of hydrated lime per gallon of tap water and a very, very small amount of nutes. I also used a capful per gallon of Hydrogen peroxide since the soil has been damp for a long time. I used 2 gallons of the mix per plant and each had about 1/2 gal of runoff. The pH of this was about 6. I also gave a light foliar feed of H2SO4, thinking the yellowing looked similar to Mg deficiency.

I know the pH is too low, probably causing a nute lockout. The question is why is the soil going acidic so quickly? Root rot? I am unable to get Cannazyme or Rhizotonic now due to finances and local unavailability.

So, what's wrong and what should I do?

Here's the troubleshooting form:

Plant age 73 days since germination. 36th day of 12/12
Indoor
Soil
50% Jungle Growth soil mixed with 25% vermiculite and 25% perlite
Miracle Growth veg nutes with tomato on box (no longer using)
Green Light bloom nutes 12-55-6
Hydrated lime
Permitherin and Bifenthrin insecticides (for fungus gnats, no longer using)
City water source pH about 7
Lights 13 Cfl's and two 48" t8 tubes (450 actual watts/1650 equivalent watts)
About 42000 lumens for 8 sq ft grow area
79-80F day temp/65F night temp
45% relative humidity average. 65% max. 30% low.
Closet has high CFM exhaust into attic with passive intake at floor level.
dillhole Reviewed by dillhole on . Yellowing again. Hi, it's me again. My plants seem to have the same problem that they had in this thread, only it's worse. After I thought I resolved the problem the last time, the plants looked great for a while. Now the yellowing has very rapidly progressed up the plant and the sugar leaves are showing symptoms. Since the conclusion of my last post in the problems area, I have given them two waterings. The first was plain water with 1 tsp per gallon unsulphured molasses. I noticed the runoff then Rating: 5