The tank is cycling, it looks awful. At least a 2g is easy to clean up!

I pulled the rock out of my sump, it's been in there for a few years, I don't think it was ever in the display tank up top. Yet...

The sump rock is growing ulva all over it!



I have ulva in the display tank. Every once in a while the stuff goes crazy and grows everywhere, even on the glass if I don't wipe it daily. I can't really call it a nuisance algae because its so easy to get rid of, but I think its cool and tend to let it grow in weird places. An ulva bloom is a quick slap on the wrist to let me know I over fed. It all balances out pretty quick, and the fish enjoy a healthy and tasty snack.