Day 42 SBs x 3:
Colas:
Colas:
, I read a bit of algae is not a major problem but need to keep on top of it. So scrubbed and removed what was there. Moved mid SB back so nearly all tray covered. I see now why you have a closed off system for hydro.
Hahaha no idea mate but you're not being a smart arse you're being innovative!![]()

I would rule out h202 straight away. Like you said that will kill all your good beneficial bacteria and biotabs are an organic product.
I would guess that the algae would just grow in the perlite too- not sure on this though?