They are not on the pump. The heater is in the overflow, can't see it. There are none in the sump or refugium. Just on the rocks and glass. I'll check everything tomorrow.
Not sure if I have a Magnesium test or not. I do have a calcium test. It usually stays around 530. Are snail eggs hard ? I have one rock that is covered with them. I can't get a better pic, I tried. When I zoom, it just gets blurry.