I would like to get some assistance in getting my pool chemistry up to snuff. I have a 35K gallon SWG plaster pool.
I went on vacation for two weeks and had the local pool store maintain the numbers. When we got back, I used the cheapo test strips and found that the FC wasn’t even registering. I brought the water to the store for testing. FC was 1.3, CYA was 17, and PH was 7.5. They said that other than the low CYA, everything looked great. They suggested that we increase the CYA but said nothing about raising the FC. Shouldn’t I be worried about the low FC? Based on their suggestions, I added 12lbs of conditioner on Sunday to bring up the CYA level.
In the meantime, I bought the TF-100 test kit so I could more closely control the numbers. I tested yesterday afternoon: FC was still very low, CYA was 45 and PH was 7.5. I’m also starting to see green algae growing in the pool. We had algae earlier in the year and back then, based on their suggestions, I shocked the pools with granules and added Biogaurd Banish. The algae went away for a month, but now it's back. Other than that, the water looks clear.
I would love some help on the best course to fix the problems. I'm a relatively new pool owner. If I throw a bunch of chemicals in the pool and screw it up worse, my wife will kill me. My guess is that I need to bring up the CYA to 70-80 and shock the pool to stop the algae. If this is case, can you do both at once or is there an order to follow? BTW, I plan on keeping the pool open for another 3-4 weeks.