Learn something every day
I know I know, we don't use filters anymore for our tanks. the LR and the sand do that for us. I am a pool and spa guy and I know some people use DE (Diatomasus Earth) for polishing their water. But we also use sand filters in pools and spas. This is about 50 to 200 pounds of sand that the water is pushed through. Has anyobne tried this or would it increase the bad stuff like bio balls??