Yep.So I'm looking to set up a tank at work. Unfortunately due to restrictions, I can't really use any electricity. Someone mentioned that if I use two U tubes one drawing water from one and the other drawing water from the other, that this would create water movement without electricity.
Oh, until equilibrium sets in.
You could use a tire pump taped to a stationary bike so while you pedal the handle goes up and down forcing air through a lift pipe. Add a small generator to power a LED strip and bingo, zero impact reefing.
Man on fire today boys. bringing the heat. yeah. (high fives the dog)
I'm just kidding.
my dog doesn't high five.