Which of these filters would work the best on a indoor stingray pond? It is going to be about 2500 gallons. The filters would be a 175 pound sand filter, 6000 gallon bead filter or multiple pressurized filters.
I would go with a bead filter.They were designed for fish filtration and to carry a bioload.Sand filters were designed for swimmiing pools not living water and bacteria can make the sand clump together.Bead filters also can be run with a smaller pump.