HELP i have a white foam buildup on top of the water in my DWC Res..???

[stinkyattic]

and my tap water has a ppm of 760...

OW! That's lovely! Can you stand a spoon up in your water glass?
Go for the RO unit, and add CalMag to your res to replace minerals lost.

stinkyattic Reviewed by stinkyattic on 10-17-2007. 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