I have a good handle on the whole water chemistry thing, but seem to be having a problem maintaining a good 3-4 FC level in my pool lately. I have a Pool Pilot with a SC-60 cell. When I first opened the pool and activated the salt cell about 6 weeks later, I used to be able to maintain FC levels with the cell power set to 1 and the power around 75%. I can't to do that anymore. I've bumped the power from level I to level II to level III now and am running at 80%. I check the water every morning and end up with a FC of about 1 ppm. I've been supplementing after my morning testing with bleach to keep my FC up to 3-4. The water looks good and I do not believe I have any algae problems.
I can see the tiny bubbles coming from the nearest return to the equipment pad, so I think the cell is making some kind of gas or could this be from something else? I don't have a leak in my system and my pump strainer lid has no bubbles floating in it and my filter housing is not collecting air.
Do I have a problem with my salt cell?
Here are my morning numbers, and these have been about the same over the last week or two. I went through the borate adding process over the last three days and everything went well and rebalanced out.
Am I missing something or do I possibly have a bum cell?