A reFugIuM ?

Usually a sand bed, some LR, and macroalgae. You'll get enough critters from the LR and macro. They're free from predation in a fuge, so they'll have no trouble reaching good populations.
 
do you ever need to replace the live rock or anything to restimulate the population or should they breed enough to stay in there?? and would you need to feed them or would they take care of themselves?
 
Nope, just let her rip. Other than pruning/pulling out overgrowing macro, it's pretty self-sufficient.

One thing I didn't mention... it's a good idea to get your macro from several different reefers. Tons of fauna comes with macro, and this will ensure a nice and diverse fuge.
 
even with a fully stocked refugium you would need to supplement the food you put into the main aquarium right?

and i know this isnt exactly the right forum but can a refugium be made for a freshwater setup too? or would it not work the same way?
 
No, you don't have to. Enough detritus and stuff will be swept into the fuge from the main system. It'll be more than enough for those critters to stay happy.

For FW? You really don't have the diversity of microfauna in FW to make it worth it. I suppose you could have a separate unit filled with plants for nutrient export, but if you're going to go through that trouble, just make a planted tank. FW plants are too beautiful to squirrel away out of sight.
 
I had a planted sump for my FW tanks. I could never keep my nitrates below20 so I gotsome of those apon. bulbs, very cheap and hardy. As satchmo said it works for nutrient export, I don't think the same idea applies to FW concerning food supply.
 
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