After going through Leslie's algae removal procedure 3 times, each time we could not get the dead algae out of the pool, and then it bloomed again. We would see it all there settled on the bottom, but when we vacuumed, it came straight back out through the jets. BTW the Leslie's procedure is:
1) Lower the pH to 7.2
2) Add "Green to Clean" aka "Yellow Out"
3) Add three big doses of Power Powder Plus (fast-dissolving cal-hypo) 12 hours apart
4) When FC is down to normal levels, add ClearAid (enzyme that makes the dead algae clump)
5) Filter out and/or vacuum dead algae
So the Leslie's guy speculated that our cartridge filter housing had a broken manifold. A friend who owns a pool service company came out and thought the exact same thing. We invested in brand new pump and sand filter. And guess what -- exact same result. it comes right back through the jets. At least now we have a waste setting so we can pump that crud to the lawn.
I finally realized that the reason it kept re-blooming was that we let the FC fall to 3-4, but our CYA is 100.
In any case, I added a ton of Power Powder Plus again a few days ago (I skipped the Green to Clean), and that seemed to kill it, but the pool is still green, and not much has settled out, so vacuuming to lawn isn't helping much. So off to Leslie's to buy another darn bottle of ClearAid for $27. Or should I just give up and replace all the water? My friend estimates that would cost $600 including water bill.
1) Lower the pH to 7.2
2) Add "Green to Clean" aka "Yellow Out"
3) Add three big doses of Power Powder Plus (fast-dissolving cal-hypo) 12 hours apart
4) When FC is down to normal levels, add ClearAid (enzyme that makes the dead algae clump)
5) Filter out and/or vacuum dead algae
So the Leslie's guy speculated that our cartridge filter housing had a broken manifold. A friend who owns a pool service company came out and thought the exact same thing. We invested in brand new pump and sand filter. And guess what -- exact same result. it comes right back through the jets. At least now we have a waste setting so we can pump that crud to the lawn.
I finally realized that the reason it kept re-blooming was that we let the FC fall to 3-4, but our CYA is 100.
In any case, I added a ton of Power Powder Plus again a few days ago (I skipped the Green to Clean), and that seemed to kill it, but the pool is still green, and not much has settled out, so vacuuming to lawn isn't helping much. So off to Leslie's to buy another darn bottle of ClearAid for $27. Or should I just give up and replace all the water? My friend estimates that would cost $600 including water bill.