my spa foams when jets are running, and pool foams when backup valve for polaris pools cleaner brings it up to the surface.
the pool is 25K with spa with 8 jets on the side.
It has compool 3400 panel, whisperflo 1.5 hp pump, 48 DE filter, minimax heater, inline chorinator, nature2 cardridge, air blower for spa.
The chemistry is as follows:
Water PH 7.6
Calcium Hardness 230
I use Pool Perfect + phos free 3 cups / week in the skimmer
Foam disolves on its own 20-30 seconds after jets stop running (water clears up), and after polaris goes to the bottom.
If I wade with my hand or the brush in the pool while brushing the walls , the foam reappears and then disolves on its own
It started last year in the middle of the season after I added 1 qt of black algie killer instead of regular algie control (green /mustard algie control) because the store did not have my brand at the time.
The foaming was really bad for 6-8 weeks and was almost gone after using several gallons of defoamer (the spa used to have a head of foam like in the beer mug - about a foot high or so) ...
So, now before new season starts I would like to get rid of this small foaming problem , but do not know how.
Can you help please?
Thank you in advance