I have been reading with great interest the valuable information available on this site and am gradually learning a bit about looking after water. I recently thought I'd found the solution to my problem in a thread from last year about recurring white water mold only to read that the ultimate issue was degenerating pipework (which I'm pretty sure is not my issue).
I've had my hydropool up and running for nearly 18 months, started with chlorine, had occasional issues with cloudiness but overall managed ok except for the odours (the pool is indoor and accessed directly from the house). After discussions with my chemical supplier I was advised to switch to bromine. I also had (still have) an issue with high CYA because I started with stabilised chlorine tabs (as instructed by Hydropool) and didn't know anything about CYA and that it isn't desirable in indoor pools. So I've been on bromine for about 6 weeks but it has taken all that time to establish good levels so I've been supplementing with a calcium hypochlorite shock and clarifier that I had left from chlorine days (no CYA) and shocking with a non chlorine shock about weekly. That's the brief history.
The problem I have may have started after cleaning the pool cover to remove limescale - I used a domestic limescale remover and mains water through a clean garden hose. The cover is just blue bubble-wrap laser cut to size and floats on top of the water.
The white stuff seems to keep returning no matter what I do. It is not limescale as it is a filmy, organic type material that when collected on mass is actually a kind of light olive green sludge that just looks white in the water. When the filtration is not on it mostly sinks to the bottom but some remains floating on the surface. I have a photo but couldn't seem to include it in my post.
Initially I'm really trying to find out if anyone knows what this stuff is and then of course any ideas about how to get rid of it for good.
Test results are as follows: (I'm afraid I only have Aquacheck strips, which I'm sure you're all going to tell me are rubbish and I need one of those expensive kits)
Total hardness - 500
Total bromine - 10
Free chlorine - 2 (I have supplemented the bromine with calcium hypochlorite on the advice of chemical supplier)
pH - 7.4
Total alkalinity - 120
CYA - 100
I look forward to any help you can give.