Swimming Decorator crab

Mandarins are not like most fish we keep. Their digestive system is more like a seahorse or pipefish. They don't have a real stomach and can not store food as we, and most fish can. You can tell how often a fish has to eat by the size of it's mouth. A mandarin has a tiny mouth which is not designed to take a big mouthful of anything at any one time. They are also not designed to bite pieces off larger food items.
A mandarin was designed to eat pods and little else. We as aquarists tend ...

Today I decided to have a typhoon in my reef. I do this sometimes twice a year and IMO it is the main secret as to what has kept my tank going so long.
I run a reverse undergravel filter like almost everyone on here! No? Oh I thought everyone did. In any case, this is what I do to keep the tank going. As you can see I have two diatom filters running at the same time. I could do it with one but it takes twice as long. A diatom filter removes anything smaller than a micron which is much ...