I don't have the money to buy PH up or PH down. I do have PH up and PH down made for aquariums. Will that work or is it a bad idea?
i wouldnt use the fish tank ph up and down. i used it for my last grow and had all sorts of problems that i believe were from the aquarium ph up and down. my current grow is going perfectly fine and the only thing that has changed is i now have general hydroponics ph up and down. you may still want a more expirienced growers opinion but hope this helped. GL!