Just looking for advice. Checked the pool earlier and noticed it was beginning to slime up slightly again! This shocked me somewhat, as I added the chlorine in on Sunday (I try and aim for FC 4 in my pool - using 20g of dichlorine as worked out by Pool Math). So I tested the water and FC was 0! PH was about 6.8. (70g of laundry bleach also added to try and top that up to 7.5).
What I'm trying to work out is why the FC level dropped so low so suddenly. In the first week since refilling the pool, FC was about 2.8 (left it alone at this point - didn't want to raise CYA unnecessarily). The second week (last Sunday) it did drop to 0 however nothing slippery on the sides.
In the last week or so though, these things happened:
- I realised there wasn't enough water for the filter to work efficiently! The water was freezing as pump wasn't able to send it through the solar mat effectively. I topped the water up higher.
- That top up didn't last long though as the upper filter hose popped out overnight losing about a third of the water!!! Put it back in, moved the clamp to make a tighter connection and refilled the pool. Obviously this will dilute the chlorine further. Mind you - the filter pump has been a lot quieter since filling up further and the water has been warmer.
- (thinking about the above - warmer water means more algae growth, which means more for chlorine to do!)
- It is warmer here at the moment - tomorrow could actually be a pool using day!!!
I've been testing using a cheap Bestway testing it, however a (hopefully) better Pentair kit (78DPD I think) has now arrived. I haven't read the instructions yet to work out how to run the tests.
BTW - I bought the Pentair kit as it says it does the CYA test on the web page I bought it from, the box says it does a Total Alkalinity Test. Are these the same thing or is their a mistake on the web site?
Any thoughts and suggestions will be gratefully received!!