Quote Originally Posted by F3AFlyer7
Hmm...


See I originally thought it was the CYA also. However, these are all happening on pools that are being opened for the first time this season. We check their stabilizer every year because we drain our pools half in the winter. They all have very low stabilizer from the loss of water. So that means the too high CYA level is not the problem. As for our strips, the FC and the TC are the levels we are looking at for this problem. When this problem occurrs, its never on the slightest of hugh difference. Its always a major difference and definitely noticable every time. Large amount of TC, and no FC, any more chlorine added doesnt show up until a break point shock.
Hi F3AFlyer7,

I know that you posted earlier that you primarily use test strips. But do you also have a drop kit? If you had a complete (or at least more complete) set of numbers from a customer or two (both end of last season and this season) it seems that some of the other members here may be able to help you better. They've really only got a description of the signs and symptoms of what has happened and is happening. It would also be useful to see what some drop tests say along side these signs and symptoms.

First off...let me say that I am a complete pool newbie! Let me second say...I love Ben's kit. It has not only been an instrument in getting me off to a good start with my pool water...but it's also contributed to my understanding of why I needed to stabilize my water and what changes took place to implement those changes. I'm learning...slowly but surely

take care,
dan