1 canister filter for 2 tanks?

This has been discussed multiple times on the forums and usually people get discouraged after what they hear, sorry!

You run the issue of spreading diseases to both tanks as well as it being very difficult to balance the input/output and not risk the chance of overflowing one.

It has however been done before so it is possible. I'll let some more experienced folks chime in with some precautions to take.
 
The only way I have seen it done was adding a sump inline which in my book does not equate to running two tanks off of one canister.
Would love to see a fool proof design tho!
 
You would almost have to bridge the tanks so you eliminate the risk of overflowing one while draining the other if an intake or output should get clogged.
 
You would almost have to bridge the tanks so you eliminate the risk of overflowing one while draining the other if an intake or output should get clogged.

exactly... a water bridge... essentially making one large tank in 2 places... but you have to be able to make the bridge. of course it would have to be clear. stock would all have to be compatible still.

otherwise, a sump can have 2 ouputs.
 
Pardon my terrible artistic skills, but this is essentially what is would look like:
filter-2-tanks.png


Now, the tops of both tanks need to be level with each other. The PVC U could be made with clear PVC or standard white - clear is really expensive, and would probably mean that a second filter would be more attractive.

The major opportunity for failure is the U bridge between the tanks. If air gets up in there or it becomes clogged with plants, fish or other debris, the filter will happily overfill the tank that has the output. A solution to that problem is a float switch on the tank with the output which would kill the filter if the tank started to get too full. Again, that would add expense and I think you are looking for ways to save money.
 
absolutely... doing it right would be a waste of money. i wouldn't use pvc, personally for example... for the reasons stated. i'd use flat panels and make a large square bridge if i were to do it.
 
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