DIY Photosynthesis Plus(PSB/PNSB) & Cyanobacteria recipes.

[Shadey]

@SillyHippy

You can use fish fertilizer for PH down and agsil ph up.

I rarely have to PH up unless I add to much labs dont need very much to drop 5 gals to 6.2 from 7 maybe a tablespoon. I cant use fish in the house the cat and dog start trying to break into the tent lol.