You've already seen it doesn't work, if you're concerned enough about foam to post a question about it.
Why don't you want to use your RO system? And what about your tap water? Why are you using spring water to begin with?
stinkyattic Reviewed by stinkyattic on . HELP i have a white foam buildup on top of the water in my DWC Res..??? Ok i have a white foam buildup on top of my res water....there isnt too much of it but its on my roots now..and i dont know what it is....It happened a time before and went away in a few days...so idk what it is??? i am using GH 3 part nuts. and water from a local spring with a PPM of 220...someone have any suggestions or ideas?? Rating: 5