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i plan to put a setting canister to use i have a 29 gal tank id like to put it on the can is rated at 350 gph can i put a turn down value on the out take or will this dammage the unit

I don't think it will hurt the cannisterbut depending on what you are keeping in the tank, and the pressure coming out of the spray bar, I don't see why that would necessarily be badyour tank would certainly be well filtered

If the pressure isn't that strong, and you are keeping sturdier fish (I'm thinking something not shaped like Angels, and Discus) it shouldn't bother them...but then again I'm of the opinion that you can't really have too much filtration, as long as it isn't beating the fish up

heidi

"I've got a great ambition to die of exhaustion rather than boredom." Thomas Carlyle

the only prob. with reduced flow is the colling of coil block which in't crucial as long as the impeler doesn't stop moving completely it shoun't over heat.
you see when electric current is flowing through the coil it must be "used up" now realisticly there is only two options for the electric energy and thse options are to either be converted to kinetic(movement) energy or heat.now impeler pumps can keep moving withouth any water flow unlike piston pumps(wich are more powerful thow) so the impeler pump normal won't "burn out" unless there is somthing jamming the blades which is diferent from reduced water flow.

i guess i,ll just play it by ear heidi what would be happy in this size tank all i have exp in is cichlids and a betta so i might need some help three tanks and growing my wife is going to kill me