I don't fully understand it myself, citric acid vs phosphoric acid ...
I know some pH crystals are citric acid based.. but like you I can get in the way, of a lot of things, with these little what if and what nots...
No this "buddy" is someone close to me, not online ...so yeah....
I might try this next grow..
SaferGro pH Down is designed to quickly and effectively lower the pH in water into a more acidic range for use in organic, conventional and hydroponic growing. Unlike many pH adjusting products on the market; this product is non-hazardous and can be used in organic production. A lower-pH, more...
www.arbico-organics.com