Planted Tank Enthusiast
Join Date: Apr 2012
Location: Edmonton, Canada
I've done this with 20 gallon tanks and the large Marina breeder boxes. You have to DIY a water pump instead of the air stone to run the box, and then find a clip on light, but it works great for growing moss. I think the Finnex box comes with the option of air pump or water pump so that might be a better option.
The other thing I have done is ran some airline tubing into the outlet of my ehiem 2215 and then clipped that in the box, works well too.