Inedaan's 29 Gallon BioCube

[Inedaan]

:O There is all sorts of random things mysteriously showing up and Algae is trying to take over my tank! There is now atleast three Brittle Stars and I saw a group of like ten snails (One that was about 2-3MM big and then the rest were really tiny) wandering around...

Also, there is something digging burrows... The flow in the tank keeps blowing the sand down and covering this one hole in the Live Rock and EVERY morning, it has been dug back out?

I put the Live Rock (LFS had it labeled as completely cured and ready to go) in on Sunday and the Ammonia went up to about .25-.50 about two hours later. Ever since then Ammonia, Nitrite and Nitrate have read zero, when should I start to put some CUC in there?