Woke up to all this. It looks very similar to the sticky stuff limpits cast but i dont have this kind of infestation of those. I have actually been beating back the few limpits I have with bumble bee snails and ice picks. These look like white almost grey wet spider webs covering everything. They are also very slimy. This happened overnight and keeps coming back when i blow it off everything today. I am guessing first step is 30 percent water change. But what is next or has anyone seen this and know what it is so I can dive down the rabbit hole of possible solutions. I am on my 3rd filter sock and am trying to strain evertything through a fine mesh net to get it out manually as much as possible before a water change. This stuff is also all over everything in the sump any ideas or theories much appreciated.