I might throw it out well see. Im already gunna have to throw out some portion of hydroguard, itll expire before i can use it all. And Grow Big should be here any day. Ive switched to sterile for now trying to get rid of this root rot shit entirely, and i gotta say she does not like it.I used it as directed ( I did use a power head pump to keep circulated) in a ebb flow system and had no issues except it smelled like a giant egg fart the whole grow. I would highly recommend for a soil grow but would be the last thing I used for hydro.