I am new to this forum and desperate to get some help with this pool. I am frustrated with conflicting advise on how to clear our green pool. Sorry this is going to be long but I'd like to include as much as possible...
Kayak 16' x 24' on ground/above ground pool with deep end, vinyl liner
2 main drains, 1 skimmer
1 hp pump with sta-rite cartridge filter
Pool Frog chlorinator with chlorine bac pac
This is our 4th summer with this pool. We have really had no problems with this pool it has been very easy to maintain with routine shock and very little vacumming needed -- UNTIL NOW.
Used the pool on July 6th, put in one bag of pool shock after swimming. The pool was unused and covered with solar cover until July 10th when we took off the cover and it was somewhat cloudy and green colored. Pool store said our Free Chlorine was low and to add two bags of Burn Out Extreme.
Back to the pool store on the 10th and they said chlorine was high enough and it should be killing the algae - just run on main drain only and run it continuously. They said that the problem may be the cartridge filter - just takes a while. Added more shock on the 15th and 19th. The water is darker green and cannot see beyond the first step on the ladder. On July 20 we decided to try an Algaecide that has 3.3% copper - used 16-18 oz. This did nothing so about a day later we put in the rest of the bottle - 14-16 oz. Oh, we also have been switching out our cartridge filters and cleaning them - they have not been overly dirty (some green). Back to the pool store on July 22nd - result of water test:
TC - 6
FC - 6
Talk - 193
adj total alk - 148
hardness - 314
CYA - 151
They didn't really know what to suggest so he said to try PowerFloc and sit overnight without pump running - then vacuum the next day. I did this but still no result. I saw no settling to the bottom - can't see the bottom. Yesterday I added something to adjust the PH and it is back to 7.6. Went back to the pool store today and they said the water is in balance and that we just need to keep running the pump on bottom drain with just a little bit on the skimmer. He said there is a little iron and copper in the pool also. They don't seem too keen on cartridge filters there so I think they are saying that is the reason the pool is not clearing. I think we still have live algae in the pool though.
So that pretty much brings me up to date. - Don't know what to do next. I've read a little bit on your forum and see most of the recommendations are for liquid bleach and lots of it. I've never used this in my pool. Why is this recommended over bags of pool shock?
Thanks for any advise - our summers are short in MI and we are not getting to use our pool