FX6 too powerful on 4' tank?

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V

VPBassist

Jack Dempsey
MFK Member
Apr 25, 2011
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Seattle
I have a 4 foot 75g aquarium and was given a Fluval FX6. Will the filter be too powerful and blow sand all over my tank and create currents too strong for my fish? I'm stocking a Texas cichlid.
 
The flow can be controlled by the aquastop valves on the filter and/or you can diy a spray bar out of pvc that will diffuse the flow over a larger area of the tank to suit your needs.

Here is a link to the manual. Top of page 7 states restricting flow with the valve will not damage the motor.
https://usa.hagen.com/File/1c5c461b-b132-40f7-b1d6-abc5deeb4a3e
 
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It's better to throttle the aquastop valve only on the output I believe and not the input. That's what I do to with the quick releases on my Eheim canister which is the same concept.
 
VPBassist said:
I have a 4 foot 75g aquarium and was given a Fluval FX6. Will the filter be too powerful and blow sand all over my tank and create currents too strong for my fish? I'm stocking a Texas cichlid.
Click to expand...
Not even close to too much. My 4 foot is 120 gallons, and an FX5, the FX5 is just enough for a very gentle current. I have to turn on the Jebao RW 8 to get some movement, and that's over twice the flow.
 
You should thank whoever gave you that FX-6. Great filter. Currently on sale for $250 at petsmart. Normally $360.

As many have said you'll be fine. Throttle down the output if you feel its too fast of current for your fish/decor.

Someone mentioned not to throttle the input. That is 100% correct. The pump runs at one speed so if you restrict the inlet flow it can cavitate and make an air pocket which will damage it.
 
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