sand

Hey guys I wonder why there is green algae on my sand bed!? There is a little growing on the back of my tank but it is mostly on my sand.. is there anything that can actually eat that? or any way to remove it? here is a picture

Hello! I am new to this hobby, and I will be converting a 150 gallon tank from fresh water to salt water. It is a beautiful clean tank and already drilled for saltwater. First. The tank has black sand in it from Hawaii. Can this sand be utilized for a saltwater set up? What do I need to do to...

Hi guys, The sand in my tank is starting to get a little PINK ?? Is it a bad thing? I tried to take a picture... it doesn't appear to be so pink but it's pinker than on the picture! here it is! Hope to hear from you soon! thanks in advance!