I added 20 Mule Team Borates and Acid (per the excellent procedure posted on TFP website) summer last year to get me up to 30 ppm using LaMotte borates test strips. Happy with the result, as it seems to buffer my pH swings to the high side. Less acid used over the long haul. Hard to estimate the other benefits and my two Maltese dogs don't go anywhere near the pool...so dogs drinking pool water not an issue LOL.
This year I noticed my Phosphates went up from 400 to 1200, between closing 11-1-16 and opening 3-28-17. Everything else right now is in perfect balance. The water looks great...albeit at 65 F still.
I would guess that adding 20 Mule Team Borax (from good old Wal-Mart laundry detergent aisle) did not cause this raise in Phosphates...and I wonder what could. Fertilizer used on grass nearby? Over-spill from large broadcast fertilizer spreader? Leaching thru the nearby ground (NOT!!!) It seems highly unlikely given the amount of 10-10-10 fertilizer required to raise it to 1200 from 400.
How about sprinkler water from a 250' deep underground well? One of my heads does over-spray a strong mist or momentary stream in to the pool, depending on wind direction and velocity. Hmmm. Maybe I should test my well water?
Bad test result from the Pool Store guy?
I'm not overly worried about the Phosphate level....just curious what made it change from 400 to 1200 over the winter. I'm not going to rush out and buy the phosphate removal kit (of course recommended by my Pool Supply Dealer up the road)...I know how to keep the algae at bay....
Thoughts?
This year I noticed my Phosphates went up from 400 to 1200, between closing 11-1-16 and opening 3-28-17. Everything else right now is in perfect balance. The water looks great...albeit at 65 F still.
I would guess that adding 20 Mule Team Borax (from good old Wal-Mart laundry detergent aisle) did not cause this raise in Phosphates...and I wonder what could. Fertilizer used on grass nearby? Over-spill from large broadcast fertilizer spreader? Leaching thru the nearby ground (NOT!!!) It seems highly unlikely given the amount of 10-10-10 fertilizer required to raise it to 1200 from 400.
How about sprinkler water from a 250' deep underground well? One of my heads does over-spray a strong mist or momentary stream in to the pool, depending on wind direction and velocity. Hmmm. Maybe I should test my well water?
Bad test result from the Pool Store guy?
I'm not overly worried about the Phosphate level....just curious what made it change from 400 to 1200 over the winter. I'm not going to rush out and buy the phosphate removal kit (of course recommended by my Pool Supply Dealer up the road)...I know how to keep the algae at bay....
Thoughts?