Pool Liner Color Bleeding

[gems2jim]

Thanks Janet for the suggestions. I will get a new 4way drop based kit for truer readings. I stooped using these kind of testers years ago as one of my children ruined the pool and it took me 2 weeks to correct it.

Yes, you are correct that I am using trichlor pucks or dichlor powder for chlorination. I have thought about using Lithium and Di-Chlor but the prices are almost double. I have not had to use any shook for last 2 months.

You say to keep my chlorine at 8ppm, is that Total or Free chlorine? I try to keep it 3ppm or less (w/strips). Since I'm using Nature2 cartridge in the supply, they recommend a chlorine level of 0.5ppm Free Chlorine. I find this hard to achieve at times, but my water is always clear, even at the high numbers I stated above.

What is the best way to decrease my Stabilizer from 150ppm to about 80ppm or will time take care of it.

Thanks

[PoolDoc]

CYA levels drop only by dilution (evaporation doesn't count!) or by bio-degradation (pool slime).

But, you can't simply let your pool get slimy for a couple of weeks, because the end point of the bio process can be nitrogen gas, which is no problem, nitrates, which aren't good but aren't an immediate problem, OR ammonia, which is a HUGE problem. We don't know why sometimes it goes one way, and sometimes another. MOSTLY, it does NOT go to ammonia. But, on a occasion, it does. We had a lot of pools with zero CYA and high ammonia early this pool season, and they are a nightmare to clean up.

So . . . the safest route is a partial draining. You'd need to drain about 1/2 the volume of your pool, to go from CYA=150 to CYA=80 However you must be VERY careful with a liner pool. Your liner is held in place by the water, and if you drain it, you can lose it. When the liner is first installed, it's very elastic, but over time, it loses it's stretchiness.

With a liner pool, you can usually safely drain it to 8" above the HIGHEST horizontal liner covered surface. On most pools, this is the floor of the shallow end. But, if you happen to have liner covered steps, you can NOT drain the pool at all, without professional help.

Your other option is an in-place draining, which is safe, but a time-consuming, fidgety process.