afters stumbling across an old thread on another forum, i have been reading here. i have decided to try breeding marine bettas in my mixed reef which has become increasingly stocked with non photosynthetic corals. i already do not run a skimmer - instead i have a very deep sand bed fuge with mangroves. i wanted to boost pod population and increase the nitrogen processing capacity of the tank to accommodate the heavier feeding i will have to do for the nps corals and the fry once i get to that point (since they will be housed in a rearing chamber plumbed into the whole system. the total water volume is about 320 gallons with the display size of 240 gallons.
here is the design i have come up with - still have to add the pvc drains that will take the water into the sump. this will be run with one of my two drain lines (about 800gph). it is a 24" wide screen. the bottom section will be filled with live rock rubble.