500 gallon Bullfrog. A few years now. Have had foaming issues. Decontaminated twice with Ahh-some. First time some light green material floating around, not much. Little scum line. Did it again and mostly foam, no real scum. Filled it again with my well water. Very soft well water, no hardness at all. pH 8.3, TA 160, Ca 0 at baseline. No iron, magnesium, maybe a little fluoride. There is sodium in the water at 73. Used hose and hose filter to fill it back up this past weekend.
These past few days, got pH down to 7.4-7.6, TA 80, Ca 150. Still getting champagne foam ball in middle of tub when jets on high. Been scooping it out all week. No scum line. Chlorine demand low, free chlorine went from 10, to 8, to 7.6 ppm on consecutive days, so little chlorine demand. I assume that means that there is not that much "stuff" in the water, as for the past 3 days chlorine has declined minimally, yet I continue to foam. I tried enzyme product to see if there was any residual soaps, etc, and also shocked with MPS, no luck.
Of note, when I use any of my outdoor spigots, the water foams a lot from the hose. Looks like the same as in the tub. Takes time to settle down when using outside hoses. Does not foam inside the house, however. And I did let the water run through the hose a bit before filling tub up with filter.
Any thoughts? Could this be just my well water and/or contaminates from the hose and should I get my water delivered? Something still in the tub? Not sure if I should refill with my own water or get it delivered? Thanks.