Yah in the better pictures those are clearly a sponge/tunicate, the kind that like to live in the dark or in the shade. The first pic did look a lot like aiptasia though.

they're a good sign, so don't worry about them!

It looks like an aquarium heater to me.

it might also be a snail ;)

alright guys. Here are two more pictures... I took the heater out for a clearer picture. I also noticed that I have a lot more then three clusters of this..

No question at all, they're a sponge. Totally harmless, some might even say beneficial. They're filter feeders and are a sign your tank is maturing nicely :)

It is sponge

its ugly and I have a bunch of it... any removal suggestions?

BTW thanks for helping me out!

sponge
 

You just killed a sponge!
Keep them in there, theyre good for your aquarium
The minute you take them out of water, theyre dead