Like I said, I'd start by taking a look at your pool, your water, and your methods. I'm not sure that there's a better SWCG for AG pools than the Intex. It's not great, but it doesn't normally die like yours have, either.

So:

1. Get a K2006 (http://pool9.net/testkits/) and test your water.

2. Make sure you're using the SWCG *only* for normal maintenance. SWCG's *will* get burnt out if you use them to clean up spring pools or deal with algae outbreaks. Instead, do that manually.

3. Tell us about your pool, equipment and source water.