Thanks Watchguy :wave: Up until two days ago, I had no rock and no sand in the system... Other than the fist size rock holding down a piece of eggcrate (probe holder) and some sand that serves as a sand mattress for my wrasse. I recently removed a rack that held some montis, and placed the montis in my sump. My pygmy angel was not happy with me. I tossed in a nice size rock for him to sleep near. Now he is happy again :bounce1::bounce1::bounce1: I had the dry rock in a bucket for a year or longer.
Warmest Regards,
James