how big should the filter be on a 50 gal. tank to make it crystal clear.
I'm working on setting up a 55 gallon with a ten gallon sump and an Eheim 2217. I bought a gl*******s overflow I drilled a hole in the back of the tank for. I'm using a 25 micron filter sock for mechanical filtration on the sump, seachem matrix for bio, and a mag drive 7 return pump. I'm anticipating the water to be very clear.