Hello,
About 2 weeks ago, I drained my pool and installed a Pentair IC-60 SWG. I have been testing (with my TF-100) daily and everything looks perfect. When I first drained the pool, I had some residual mustard looking algae (not a lot, but is was slightly noticeable on hoses and what not). So I cranked the brand new SWG to 100% and let it run 24/7 for like 3 days. At that time, CYA was at maybe 10-20 and my FC was at 21. Figured that would kill anything.
For the last 10 days or so, FC has been rock solid at 3.5 - 4 ppm. I run the SWG while the sun is shining, as I figure that is more stable with the FC.
Today, I went for a swim and found some REALLY dark colored algae on the steps. Almost like black slimy spots that are smaller than a dime. What am I doing wrong?
Should I maintain a higher FC level? I can't seem to even scrub this algae off of the pebbletec. I wouldn't say there is a lot of it....just a couple pretty small areas (mostly by steps) - just surprised it is there at all.
Pump runs the SWG (set at 60% output) from 7AM - 3PM (after it runs on high for 2 hours for the Polaris)
FC = 3.5 - 4 ppm (test is every night before bed and it is ALWAYS in this range)
Ph = 7.5 (swings widely - I drop it to 7.2 at it is back at 7.7 within 2 days)
CYA = 50
TA = 80
CH = 260
Water Temp = 91 F (it's hot here in AZ!)
I was soooo excited to install the SWG and make life a little easier. Now I can't figure out what happened!
I also just installed a new filter and am running Zeosand. I had the filter bypassed for 4 days, but was still running the pump and SWG. Don't think that is part of this, but throwing it all out there.
Thanks for your help!!!
About 2 weeks ago, I drained my pool and installed a Pentair IC-60 SWG. I have been testing (with my TF-100) daily and everything looks perfect. When I first drained the pool, I had some residual mustard looking algae (not a lot, but is was slightly noticeable on hoses and what not). So I cranked the brand new SWG to 100% and let it run 24/7 for like 3 days. At that time, CYA was at maybe 10-20 and my FC was at 21. Figured that would kill anything.
For the last 10 days or so, FC has been rock solid at 3.5 - 4 ppm. I run the SWG while the sun is shining, as I figure that is more stable with the FC.
Today, I went for a swim and found some REALLY dark colored algae on the steps. Almost like black slimy spots that are smaller than a dime. What am I doing wrong?
Should I maintain a higher FC level? I can't seem to even scrub this algae off of the pebbletec. I wouldn't say there is a lot of it....just a couple pretty small areas (mostly by steps) - just surprised it is there at all.
Pump runs the SWG (set at 60% output) from 7AM - 3PM (after it runs on high for 2 hours for the Polaris)
FC = 3.5 - 4 ppm (test is every night before bed and it is ALWAYS in this range)
Ph = 7.5 (swings widely - I drop it to 7.2 at it is back at 7.7 within 2 days)
CYA = 50
TA = 80
CH = 260
Water Temp = 91 F (it's hot here in AZ!)
I was soooo excited to install the SWG and make life a little easier. Now I can't figure out what happened!
I also just installed a new filter and am running Zeosand. I had the filter bypassed for 4 days, but was still running the pump and SWG. Don't think that is part of this, but throwing it all out there.
Thanks for your help!!!
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