technically yes, but don't forget there's only so much room in the tank, and the rock needs flow in and around it to be effective.
now, if you were to make a sump with tons more rock in it as well that would work too, but don't try putting 20 fish into a 10 gallon tank (as an example)
you want about 1-2lbs per gallon of rock in any tank. but for a 45, you're very limited, maybe 5-6 max fish assuming small ones. no tangs, no foxface, no full size angels (dwarfs are fine), no triggers, puffers, etc.
there's no limit, but the problem is space and water displacement...the more LR you put in, the less water. the less water, the higher the ratio of bad stuff to water, the less ratio of oxygen to water, etc.
Originally Posted by new-guy http:///forum/post/2474150
is that what a sump is used for ???? i have no idea when it comes to those i just know it takes upalot of room in your stand....
It does take up a lot of room but it is definitely worth it. The higher total water volume in the system the less work you have to do to maintain water quality, and with fragile corals this makes a huge difference. It doesn't necessarily have to be set up crazy with a fuge or as a wet/dry but if you just have the tank full of water it will make a difference. Also you can "hide" your heaters and skimmer and whatever else you have to keep it out of your main tank.
Originally Posted by bpro32 http:///forum/post/2474231
It does take up a lot of room but it is definitely worth it. The higher total water volume in the system the less work you have to do to maintain water quality, and with fragile corals this makes a huge difference. It doesn't necessarily have to be set up crazy with a fuge or as a wet/dry but if you just have the tank full of water it will make a difference. Also you can "hide" your heaters and skimmer and whatever else you have to keep it out of your main tank.