Hi all,
I've been SLAMming pretty much since we opened the pool at the end of May here in NJ. We had about a week after I passed the SLAM tests, kept the FC within the range, etc. Then we got a few super hot days here and the algae came back. My FC had dropped too low one day while at work and I've had algae every since (about 2 weeks now) that we can't get rid of.
This is our third summer with the pool and the sand filter had been replaced about 4 years prior to us moving in. I know we've never cleaned the sand filter, not sure about previous owners. My husband said when he vaccuumed yesterday, it looked like green water just coming back in. So it sounds like the filter needs a deep clean, which we will have time to do this weekend. I found a good thread in the filter portion of the forum that we will follow.
Could this be why we can't shake the algae? Adding a bottle of chlorine daily is getting expensive, and brushing and vaccuuming every day is also getting annoying. The water is clear (can see the bolts on the return in the deep end - clear), just algae spots on the bottom every day when we get home from work.
My CYA is at 30, I get my FC up to 12 in the morning and it falls to 9/10 throughout the day, so I add more when I get home, and repeat the next day. So it's not dipping super low during the day while we are at work. When we opened the pool the algae was dead within a day or two, and just had to clear the water. This time, the algae won't die and appears to just resettle daily.
I've been SLAMming pretty much since we opened the pool at the end of May here in NJ. We had about a week after I passed the SLAM tests, kept the FC within the range, etc. Then we got a few super hot days here and the algae came back. My FC had dropped too low one day while at work and I've had algae every since (about 2 weeks now) that we can't get rid of.
This is our third summer with the pool and the sand filter had been replaced about 4 years prior to us moving in. I know we've never cleaned the sand filter, not sure about previous owners. My husband said when he vaccuumed yesterday, it looked like green water just coming back in. So it sounds like the filter needs a deep clean, which we will have time to do this weekend. I found a good thread in the filter portion of the forum that we will follow.
Could this be why we can't shake the algae? Adding a bottle of chlorine daily is getting expensive, and brushing and vaccuuming every day is also getting annoying. The water is clear (can see the bolts on the return in the deep end - clear), just algae spots on the bottom every day when we get home from work.
My CYA is at 30, I get my FC up to 12 in the morning and it falls to 9/10 throughout the day, so I add more when I get home, and repeat the next day. So it's not dipping super low during the day while we are at work. When we opened the pool the algae was dead within a day or two, and just had to clear the water. This time, the algae won't die and appears to just resettle daily.
