Two different ways to plug the holes.
1. pieces of glass siliconed over then
2. bulkhead fittings with caps screwed into them
Under gravel jet systems use a pump to push the water across the bottom of the substrate and kick up debris. These are generally powered by your standard pump or they are powered by an additional pump.
1. pieces of glass siliconed over then
2. bulkhead fittings with caps screwed into them
Under gravel jet systems use a pump to push the water across the bottom of the substrate and kick up debris. These are generally powered by your standard pump or they are powered by an additional pump.