Don't open this

[Daveo]

gaya1111 this is what your tank would look like!!!

 

[sakaspuds]

haha yeah water does thatbut if you had a pump in the second tank, with an outlet into the top tank, that might work, but i'd still have a built in overflow somewhere just incase

 

[Daveo]

have you told her that yet (in the do it yourself (not taking the plunge))

 

[sakaspuds]

this may also work, if both ends of the bridge are at the same height, then the higer tank shouldnt empty into the lower one

 

[sakaspuds]

i'm not the greatest art drawing guy...

 

[sakaspuds]

one more

 

[smithrc]

the problem it the fact that a syphon will be setup from the top tank.

you need an overflow (not just a pipe) from the top tank and a pump in the bottom tank.

so that as the pump takes water into the top tank, the water will rise and overflow into the bottom tank.