Quote Originally Posted by Bongtok4u
Thanks wizard, i have seen some of you post and you sound like you know what you talking about. What would cause a build up of foam in the res?
I just checked my ph and its down to 6.1 and still going down. i clean my system from all the foam and tonight its building up again and giving a stinky smell. do you know what that could be? also if i went and bought distilled water would that help? thanks

It is not supposed to smell bad kine stinky.

Brown foam sounds like mold/fungus.
Just scooping it out will not help.

You can try adding H2O2 ,(Hydrogen Peroxide), but mo' betta start with a new squeeky clean tub.
1/2 teaspoon of bleach per gallon of water will prevent bacteria and slime molds from getting a toe-hold.
Might even be able to use the well water, if you disinfect it first.

Sure, you can use distilled water.
Just gotta add some CalMag to it, (about 200ppm), then nutes, then check the PH.

Better luck,
Weezard