Originally Posted by Bowhunterking
The only pet store around me is pet co :/ so that won't get me far. I was thinking sponge filters but would wouldn't increase the amount of tank maintenance I would need to do (water changes, etc), not that I am not willing to do it, but I'll have grooming, and tons of other animal to take care of, and at least around 300-400 tanks (4000 gal
of h2o). And I read some were that sponge filters won't work with salt water is this true.
I don't know about sponge filters in a marine environment. I know very little about saltwater. Like Andrew recommended drilled is best. You can manifold a whole bank of tanks and drain them all at once. Just stir the gravel in each tank, and let the sediment drain with the water. you could still use sponge filters, if you didn't use a sump system. I will try to get some pics on of my setup. But I am not very savvy when it comes to computers