HELP! Any Tinkerers or MacGyvers that Can Help Me Out!

Ok so I have been thinking this through for a while and I am stuck so I am hoping someone can shed some light on this for me or help me figure out what terms to search google for.

Basically, I have a hydro system and want to create a back-up reservoir that will keep the primary res full. I want to do this with as few moving/electrical parts as possible. The problem I have is that if the back-up res is raised higher than the primary then it will fill beyond the max I want. If they are dead even then I am only going to have a tiny bit of water for backup. I think there must be a way by either adjusting the tubing to rise higher or something but I just can't figure it out right now. ANY HELP IS APPRECIATED!

look at a self watering dog dish for the instruction that you need. it is hard to explain but I use it all the time.

Most guys use some kind of float switch. Think of another reservoir that you use every day. Yep, the toilet. It's got a manual float switch.

I made one once from an electric switch, and I connected a metal tube with a cork on the end to be the float.

If you just want to use gravity, then you'll have to adjust the height of each res.

HTH

AllMeat...... HAHAHAHHAAH I am sooo dumb. I have one of those for our cats. It isn't out right now because they always mess with it! HAHHAHAHAHA IM SUCH A STONER!