This is one of those "because I can" sort of builds. the main advantage will be less visible equipment and a nice maintenance schedule for filter cleaning.. Why not just have a sump? Why not buy 1 large canister filter? why not just use the supplied hardware from fluval and eheim as those germans intended?
The answer is my friends: because.

This is the rough idea. No equipment in the tank except 1 expertly camoflauged drain pipe and 2 returns hidden under the trim. In true over the top diy excessiveness this build requires a stupid amount of pvc pipe Fittings.
All the research ive read said this will not work. however...Both canisters are slow flowing approx 100 gph Each. I will keep the Drains at the relative same lengths by putting a small wood stand under each filter as needed. Both the eheim and fluval use metric equivelents of standard 1/2 tube. The main drain Is 1" pvc and branches into a 1.5" 3 way junction down to 2 small 1/2" pipes to the canisters. The main problem is overcoming the water's tendancy to take the path of least resistance especially at higher velocities. So i decided the water needed to run a slower velocity under siphon and have and have 2 equal pathways to branch into. A 1" pipe has more volume than a pair of 1/2" pipes. its true look it up. You can hook up as many canister filters up normally to a tank as you want, why? becausethe large water volume allows them to operate Independently with minimal interference. Using that bulletproof logic i decided to make the junction a 1.5" 3 way wye.
but Im sure im not 100% spot on with my science and engineering here. But every guy on a fish forum seems to have a phd In fluid dynamics. Same as every car enthusiast board is full of engineers who built engines for formula 1. so please by all means, all sarcasm aside, input is greatly appreciated

The answer is my friends: because.

This is the rough idea. No equipment in the tank except 1 expertly camoflauged drain pipe and 2 returns hidden under the trim. In true over the top diy excessiveness this build requires a stupid amount of pvc pipe Fittings.
All the research ive read said this will not work. however...Both canisters are slow flowing approx 100 gph Each. I will keep the Drains at the relative same lengths by putting a small wood stand under each filter as needed. Both the eheim and fluval use metric equivelents of standard 1/2 tube. The main drain Is 1" pvc and branches into a 1.5" 3 way junction down to 2 small 1/2" pipes to the canisters. The main problem is overcoming the water's tendancy to take the path of least resistance especially at higher velocities. So i decided the water needed to run a slower velocity under siphon and have and have 2 equal pathways to branch into. A 1" pipe has more volume than a pair of 1/2" pipes. its true look it up. You can hook up as many canister filters up normally to a tank as you want, why? becausethe large water volume allows them to operate Independently with minimal interference. Using that bulletproof logic i decided to make the junction a 1.5" 3 way wye.
but Im sure im not 100% spot on with my science and engineering here. But every guy on a fish forum seems to have a phd In fluid dynamics. Same as every car enthusiast board is full of engineers who built engines for formula 1. so please by all means, all sarcasm aside, input is greatly appreciated
