What can be done about bad CG water? Follow-up...

myredracer wrote:

... Two of the filters cost over $100 (in total). And if this is an on-going thing at the CG we use, wouldn't that mean we'd be faced with this every time we go?
...

Ouch. You want to protect those expensive filters with coarser, cheapo pre-filters. A 5 micron polyester, maybe followed by a 1 micron, should stop the little buggers. That's what I do right at the campground faucet. Or the diatomaceous earth suggestion (just not sure how you could do that in an RV set up).