idk

Cleaning my tank today I found this "thing" growing on one of my overflows. sorry for the terrible phone picture I just did a sand vacuum, but what is this...

recently i have noticed these little white things have popped up on a small part of the live rock i have in my tank. they look like little sperm (not trying to be gross or vulgar, i just don't know what else to compare them too) covered in little white hair. Nothing will touch them or go close...

Hello all, I am new to this forum. I have had my 125 bow front in storage for the last 4 years. Just now getting it set back up. Before I took it down 4 years ago I had developed a red slim algae problem. I kept my sand in 6 gal buckets this hole time. I have rinsed it several times, but...

What is this thing that popped up in my tank today?

hey do you need a anemone for a clown fish or is it just for show or for them to hide somewhere. also if i get one will it sting my engineering Gobi??? thanks