T Dub’s Durban Poison Winter Garden

[WeedHopper]

Same thing would happen in a DWC if you didn't have air stones.

 

[KGB]

I run airstones in my earthboxes and I have a 4 inch stone in my 30 gallon water reservoir. Its a part of why my plants are so healthy

 

[Hippie420]

My new solution has 15ml of hydrogen peroxide per gallon. That might prevent a reoccurrence. I needed to correct this asap.

I always add H2O2 to my tanks. Trick is, ya gotta do it at least every third day 'cause the H2O2 loses its extra oxygen atom and turns into plain old H20.