Looking to buy automatic pool cleaner 4 IG pool

[nater]

Correct, I noticed a big improvement in pool light floaties at night

Its hard to get a consistent number on the dolphin's filtering capability, but most sites quote a 2 micron bag. Sand filters typically filter down to 20 micron, and DE's filter down to 3-5 micron. I have a sand filter and add about 3 cups of DE to it.

The dolphin pumps quite a bit of water, so circulation is great when its running, and pulls in more of the small stuff vs. waiting for the filter to get it as the water turns over.

I can toss the robot into a visibly clean pool, and when I rinse the filter bag in a 5 gallon bucket, the water turns cloudy and nasty immediately. It really pulls in a lot of the fine stuff. I might add some cotton balls to get super duper filtering...

I am concerned about reliability. So far I've had no issues, but I'm afraid that when something does happen, it will be a total loss or big $$$ to fix.

[Edit]
Here's a thread about robotic cleaners scratching liners in certain pool configurations. Personally I've had no issues. http://www.poolforum.com/pf2/showthr...ghlight=damage