White outcrop from live rock salt water tank

[Poli]

So saw this today in my 75 gallon salt water tank I have some corals and live rock established tank. Any ideas???

 

[Spare time]

Pineapple Sponge

 

[tbrown]

+1 Pineapple Sponge - not a bad one.

 

[EeyoreIsMySpiritAnimal]

What is that!! A R2R guide to common new tank hitchhikers.

One of the greatest things about starting a reef tank is getting your live rock in and admiring all the diversity within it. The rock comes to life different creatures. This is a guide that I, along with a very well known critter identifier @KJ , have put together for the new reefer on what...

www.reef2reef.com