I've been trying to come up with a way to have my tanks hooked up to my water source. Refill when it gets too low, as well have a two extra lines, one for mass filling and one for empty water for water changes. Oh without using electricty.
Well here's my theory.
Next to the sump will water storage unit. This unit is raised so the bottom section will be lined up to the top 3 inches of the sump. ontop of this small unit will sit a large water storage container. That will but partially submerged in the smaller unit. This larger container will have a refill system from a toilet modded into it so as it empties below a certain point it will refill.
I'm going to test this idea before I build my 120's stand. As if it works I will hook it up and design some stand modifications to house this stuff.
The idea came from two things. First .. the toilet. lol... second my cats water bowl. I'll try to draw a diagram for everyone later. As long as the larger container is sealed once modified it should work. Though I'll need to modify the float so that it can go down more than an inch before it refills.
Now realize this system will be ment more so for topping off the water level as well as a gradual refill.
Unless... I can use water flow valves to change how much water will flow directly out of the system into the sump. Hence a line for quick fill up. The second idea is to split the water line before it refills, so I can turn on the valve and the second line goes directly into the tank. My concerns are water temp, so I'd have to have heaters to help assist with that.
As for changing water, when the water flows down to the sump, I'll have valves to turn to redirect the water. This line will be sent to my sink to go down that drainage pipe.
Any ideas or recomendations? Like I said, just a theory until I can test. I'm hoping it'll work so I can do step by step and show everyone incase they'd want to use it or something similar.
PS I know I can do this with electric sensors... however I'm trying to stay away from that, for now at least.