How much CYA to put into new pool

[PoolDoc]

Did you pour it slowly through the skimmer? If you did, and it still plugged the impeller, I'm amazed. Powdered CYA will plug up, but I've never seen it do so like that.

BTW, if you add borax, make SURE you pour it in slowly -- it WILL plug things worse than CYA, if you get ahead of the water flow.

Back to your pump: you can replace the seal and impeller, or your can wait a couple of days -- pump running! -- and see if it will dissolve.

Ben

[Cords]

Oh, slowly... yeah I dumped half a cup right in. The pump cleared after about 10 minutes.
Tested today:
PH 7.8 (not sure how I got 7.2 the other day, I tested it twice and got 7.8 today)
CYA >30 but barely. I guess 30 will be my future target since I can't read much beyond it. I'm sure with splashing out water and having to top it off the level will drop slowly to 30. Only get 4 tests with the minuscule amount of testing liquid!
FC 4 (using 10ml and .5ppm multiplyer)
CC 0 Testing chlorine looked intimidating until I actually tried it. My son interrupted me during the FC drop test & I lost count, but it's always easier the 2nd try. I couldn't get every single white chunk to dissolve but the test seemed to perform well anyway.
TEMP- 68 degrees brrrr

[Watermom]

I think you are reading the CYA test backwards. If you can still see the black dot when the tube is filled with the testing solution, it means your CYA level is less than 30, not greater than 30. If it is greater than 30, the black dot would disappear before the cylinder was filled to the 30. (All CYA testers that I have ever seen don't differentiate greater than 100.)