float valves in series

[MSU Fan]

Not exactly reef related, but knowledge transfers...

I would like to hook up a top off to my turtle tank sump so that I don't have to worry about it at all. Here's the thing - I don't want a relay or an actual top off system. Since it's a turtle tank, I want to be able to keep it topped off with fresh water from my home without any other items.

So, here's the question - how do I get a normal RO line (e.g.) to run to my turtle tank (that part is easy) and then have 2 float valves (one as low level "on" and the other as the upper level "off") without any other equipment??? Is this even possible?

 

[PrisonCityReef]

I'd probably run it the same way most people run their Saltwater top-offs. Have a large reservoir that you manually fill up once a week or whatever and then have the float switches hooked up to a pump of some sort that pumps it into the main tank.

 

[MSU Fan]

I know that I can do that, the problem is space and want. I don't have any room under the turt tanks to fit a reservoir. And since salinity isn't really a concern here, I would just as soon top it off with regular pipe water and go about my day.

Not to mention that I would have to buy the topoff and pump (ok, i have this) and set it up, and then STILL have to refill it every so often.

 

[TritonsGarden]

Sounds like you might be able to use a standard toilet ballcock.

Jack

 

[MSU Fan]

hmm...I don't know a whole lot about the anatomy of a toilet. i'll have to check on that.

 

[Paul_N]

If I am following you correctly you are trying to avoid using an ATO container and another pump and just have the RO/DI unit fill right into the sump. Try this: KENT FLOAT VALVE KIT - Aquarium Center, Inc. It will allow the RO/DI unit to fill the sump up and then shut the valve when it is full.