I know this sounds stupid, but I want a waterfall under water. For this project, I obviously cannot use water for my waterfall in my aquarium. So I will use sand to simulate the movement of water. I'll call it a "sandfall" instead. I remember when I was younger, a fish store had one but I cannot find any place that sells them now. I have no idea if these are sold anymore.
The rock work will be easy. I'll use some pieces of slate to create the "sandfall." Then I'll just use epoxy to adhere them together and fill in any cracks where the sand might fall through. Once complete, the sand will cascade down the rockwork making the appearance that I have a waterfall in my aquarium.
Now the hard part...how am I going to get the sand from the bottom back up to the top so that it can fall down the rockwork? Initially, I thought that I could use a water pump to move the sand to the top, but sand will clog the pump. Then I thought that I could simply use the water pressure from the pump, but that would be too much pressure and the sand would blast out the top of the rockwork. Will air bubbles work? Perhaps the upward current that air bubbles would create behind the waterfall would move the sand to the top. But would it move enough sand?
I am open to any suggestions that you guys might have.
The rock work will be easy. I'll use some pieces of slate to create the "sandfall." Then I'll just use epoxy to adhere them together and fill in any cracks where the sand might fall through. Once complete, the sand will cascade down the rockwork making the appearance that I have a waterfall in my aquarium.
Now the hard part...how am I going to get the sand from the bottom back up to the top so that it can fall down the rockwork? Initially, I thought that I could use a water pump to move the sand to the top, but sand will clog the pump. Then I thought that I could simply use the water pressure from the pump, but that would be too much pressure and the sand would blast out the top of the rockwork. Will air bubbles work? Perhaps the upward current that air bubbles would create behind the waterfall would move the sand to the top. But would it move enough sand?
I am open to any suggestions that you guys might have.