- Apr 16, 2020
- 26
- Pool Size
- 16000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
Well gang, I'm stumped. Had a nasty swamp when we opened the pool a while back. Got it cleared up (did not SLAM because our CYA was wayyyy high, just got it visibly clear, walls scrubbed, new filters, etc. and you wouldn't know it was ever anything but crystal clear, and then partially drained it to work on the CYA). Got that manageable and started using chlorine instead of tabs while letting heat do its job and get the CYA down the rest of the way.
So, now the water looks great. My numbers are good, though it takes a LOT of chlorine to keep the levels up (consistently test/dose every other day). Yet I still have spots where algae is growing on the walls. I did an OCLT last night and went from 9.6 to 8.6. Juuuuust on the line between "everything is fine" and "girl, you better SLAM".
The other thing we have going on that I think might be a factor is that our plaster is rough. Like, literally. My calcium was too low for too long and it's really degraded badly and is like 20 grit sandpaper. I've gotten the calcium hardness back up to good levels, but my cleaner bag still has a wad of quartz crystals in it every time I clean it. Between that and some cracks here and there (thanks, shifty Dallas soil), we recognize a plaster replacement needs to happen sooner than later.
But I can't help but wonder if the condition of our plaster is contributing to this algae creep and making it deceptively hard to get rid of because it rooted into our soft plaster.
Anyway, should I SLAM to try and knock this out even though the numbers say I shouldn't have to? And can we still swim while SLAMing? And will SLAMing be too harsh for our lousy plaster? Gah.
Thanks for any advice.
So, now the water looks great. My numbers are good, though it takes a LOT of chlorine to keep the levels up (consistently test/dose every other day). Yet I still have spots where algae is growing on the walls. I did an OCLT last night and went from 9.6 to 8.6. Juuuuust on the line between "everything is fine" and "girl, you better SLAM".
The other thing we have going on that I think might be a factor is that our plaster is rough. Like, literally. My calcium was too low for too long and it's really degraded badly and is like 20 grit sandpaper. I've gotten the calcium hardness back up to good levels, but my cleaner bag still has a wad of quartz crystals in it every time I clean it. Between that and some cracks here and there (thanks, shifty Dallas soil), we recognize a plaster replacement needs to happen sooner than later.
But I can't help but wonder if the condition of our plaster is contributing to this algae creep and making it deceptively hard to get rid of because it rooted into our soft plaster.
Anyway, should I SLAM to try and knock this out even though the numbers say I shouldn't have to? And can we still swim while SLAMing? And will SLAMing be too harsh for our lousy plaster? Gah.
Thanks for any advice.