I've been having cyno issues for quit some time in my fuge. Not a real biggy until now as I'm trying to maintain a decent pod population and my cheato won't grow.
I messed it up a long time ago by adding a heavy dose of salt trying to raise my salinity. Stupid move I know. Wound up killing everything off. Anyways....it hasn't been right since.
Today I took my intake pump off to clean it, fuge had no flow for a couple of hours at the most. Scraped some cyno off the fuge walls too. Well just now 2:30am I take a look see and all the cyno is dead, along with a bunch of amphipods and very inactive bristle worms. WTH?
Question is...do I tear it down, completely clean it out and add new sand and LR/cheato. Something just isn't right with it. I'm afraid it's going to start affecting my DT.

I do have a lil canister filter hooked up an running some carbon in the DT/ChemiPure elite, just in case.