calcium hardness increaser

Greetings! I've been following the advice from TFP to maintain my pool for a few month now. It's been working great. The only parameter that's off is CH--it's been hovering around 240ppm or so. In the attempt to raise CH, I purchased CH increaser here Amazon.com (it says it's 100% Calcium...

My husband added the calcium powder, this time, and he must not have divided up per the directions, dividing a lil bit in each 5 gallon bucket of water, at least 4, and stir it then pour around edge of the pool.You can see he only did 2, 5 gallon buckets of water and it didn't dissolve. I can...

This is our 3rd season with our vinyl, salt water pool. Our pool has always been crystal clear. As I started learning about maintaining our pool I made notes about what to adjust first if needed. This year, I noted that our CH level was 140 and the recommended level was 200-400. I bought...