I used the AquaFuge Refugium for my 37 Gallon for a while. It works great but I wish I had built a stand in the back to support the biggest one 25.5" x 4.5" x 12" . Even though this one also hang on, but I wouldn't trust the weight it will put on the backside of the tank. I sold mine recently as I moved on to a bigger tank with Sump in the stand.

The stand I am talking about for AquaFuge can be just like this one... (Forum will format it to little weired shape, but you get the idea

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So, it will support the weight.

:beer:

 

I would suggest the biggest one that the opening in your acrylic will allow. If you have a glass aquarium then I would say just go for the biggest one. I myself bought the mid sized one and once my caulerpa began to grow and it was filled with critters, I only wished I had bought the bigger one. In fact, I just moved everything into a larger tank and the fact that I got to build a bigger refugium was one of the most fun parts! So I say bigger the better (ladies, um, ignore that lie)...

 

I am gonna agree, bigger is better...no matter what you say Scotty LOL

 

I love my hang on refugium. Everyone seems happy in there.

 

Lise,

Well then I'm glad I got a big one. Ten gallon show.

 

Um, I meant 60 gallon.

 

i ran an aquafuge18 on my 46bow. it was aright for being a small fuge. mine ended up becomeing a large turf mat of hair algea, and provide a great home for copepods. i never fed my mandarinfish, the fuge provided good munchies for him to feast on.
the water level does tend to get a bit close to the top if you ever have a power outage, and the pump restarts. i have had it overflow on more than one occasion, due to that.

 

Actually, good point about the overflow. Mine has done that as well. My problem was that my return was gunked up and wasn't releasing quickly enough...