Our pool is in N AL, and has been open all Winter. We've been running the pump for 4 hr/day for most of the Winter. Recently, it's gotten a bit cloudy, so I upped it to 6 hr/day. The weather is warming, and the pool is turning green, despite the FC level, which we've been maintaining.
The numbers (using a TF test kit) are:
FC: 3.0 (rec:5-7)
CC: 0.5 (rec:NA)
TA: 40 (rec:50-90)
pH: 7.4 (rec:7.2-8.0)
CYA: 40 (rec:30-60)
temp: 66.7°F
Yesterday the FC was 5.0. The weather and algae are obviously using up chlorine, but I don't understand why the algae started growing with a maintained FC level.
Over the Summer, pH tends to rise, so I typically start it out on the low side. Once it gets to around 7.8, I'll adjust it.
Thanks.
The numbers (using a TF test kit) are:
FC: 3.0 (rec:5-7)
CC: 0.5 (rec:NA)
TA: 40 (rec:50-90)
pH: 7.4 (rec:7.2-8.0)
CYA: 40 (rec:30-60)
temp: 66.7°F
Yesterday the FC was 5.0. The weather and algae are obviously using up chlorine, but I don't understand why the algae started growing with a maintained FC level.
Over the Summer, pH tends to rise, so I typically start it out on the low side. Once it gets to around 7.8, I'll adjust it.
Thanks.