View Full Version : How do I cycle water between 2 tanks?

01-26-2008, 10:21 AM
how do I go about cycling water from aquarium a. to aquarium b. then back to aquarium a. creating a never ending flow of the same water between the two aquariums?

01-26-2008, 11:18 AM
Sounds like twice the dead fish should something go wrong...........but since you asked,

They should be level to one another, Use a small capacity pump (with adjustable discharge valve) to pump from "a" to "b". Have a flooded connection pipe of twice the diameter of your pump discharge to allow water to siphon from "b" to "a".

You could actually adapt a filter to do act as your pump.

01-26-2008, 12:11 PM
That sounds expensive I just found this and wow! I'm going to do this instead.


Fish can go from tank to tank soo cool!