In-Ground Pool + Fiberglass Insulation = PROBLEM?

[PoolDoc]

Your DE filter will remove the fiberglass particles, but only if they are in the water going through the pump.

To get 99% of the particles -- which after all are a threat to comfort, not health -- you'll have to run your pump continuously for 3+ days AND vacuum your pool carefully at least 2x. However, it sounds like it will take at least that long to get the pool sparkling clean -- so you might not have to do anything extra.

Ben

PS. Is it warm enough to swim in Michigan now? I've been hearing that the NE and north central states are cold, still.