New pool owner; specs in signature. Opened it a few weeks ago and have been balancing the water since. Cleaned my filter Saturday morning; added some synthetic DE after getting it running again. The water is absolutely crystal clear and chemicals appear to be balanced, but in the morning (when pump is off) the surface of the pool is covered with these "crystal" like particles. I scooped one up in my hand and it sort of just disintegrated. Here's a photo:
Any thoughts what this is, and how to get rid of it?