Pink sponge?

Ok everyone... it's been a long time for me, been really busy with work and the tanks. I had to do some reconstruction to my 20L that has been running for about a year and a hlaf now, not much in just yet really taking my time with it. I noticed a huge amount of what im thinking is pink sponge?? i had orange spong that came in on LR that i brought when i sent the tank up, but thats all gone (oh the joys of cycling! ). My question is, Is it safe??? , i didn't pull it out the tank when I was remodeling so there was no air contact, so i dont think its going to make the tank go crazy again.

Specs of the tank right now...

SG - 1.021
76-79 degrees
no nits nats or amo
40-45 lbs LR
40lbs LS
skimmer, fuge, blah blah blah LOL
saddle back, damsel, 2 PJs, orange spot goby, herms, snails
and I just added two small shroom
t5-HO double bulb 10K and blue ant.
powerhead and a hang on filter just in case.

 

any pics?

 

pics..

BTW... here are a few pics of a smaller portion of the pink stuff... no no pepto

 

Please help ....... .... .. .. .

I'mfreaking out here, now I just found som more, this time is a yellowish green. I know some sponges are good for that "extra" filter feeding aspect, but should I be worried?

 

I know its a newbie thing, but dont freak out every time you see something new. If its a sponge, it can only be good.

 

I had green sponge in mine... Looked cool, and like luna said its a good thing....