To drain or not to drain pool with high CYA?

[PoolDoc]

I'd use bleach, not trichlor. Trichlor is acidic, and if you get enough on the spot, will damage the plaster. (Doing in a pool that's full is much less risky.)

Bleach will not damage the plaster, as long as it has no organic binders or materials present. With an old pool, that shouldn't be a problem. I'm not sure if acrylics or latex binders are being used in new plaster.

BUT if your plaster is as old and deteriorated as your concern implies, do NOT let it dry out.

[stevemac213]

Well, I did all this before your reply since I am in the process of refilling and trying to move fast. I used a trichlor puck and it wasn't too bad...yes, it left some marks but there are lots of marks already. I was contemplating getting it re-plastered while it was almost empty but can't afford it right now so trying to get a couple more years out of it.

It is dried out because it took so long to drain...I probably should have rented a pump like I did last time and drained and refilled it fast. What do you think will happen now that it is dry and I am refilling? This pool is killing me.

Thanks.

[PoolDoc]

What do you think will happen now that it is dry and I am refilling?

Dunno. Letting the plaster dry doesn't always cause problems. All you can do is cross your fingers and hope for the best.

[stevemac213]

I certainly will....and pray as well.

Should I put in a gallon of chlorine tonight, even though the pump is not running or should I wait till it is full to shock it?

Thanks Ben for your timely replies.