a 10 gallon should run at 100 gph (gallon per hour)...
Aqueon Power Filters 100 gph 10 gal Model: 10
Penguin BIO-Wheel Power Filters 20 gal. 100 gph (so at 10 gal, 50 gph) Model: 100
Hagen AquaClear Powerfilters 20 gallon tank 100 gph (so at 10 gal, 50 gph)
Eheim ECCO Canister Filters up to 35 gallons 127 Model: 2232
Rapids Mini Canister Filter up to 20 gals 80 gph flow rate Model:
Skilter Filters 10-55 gallon 250 gph Model: 3 stage filtration
Whisper EX Power Filter 110 gph up to 20 gallons Model: EX20
Whisper In-Tank Filters 90 gph 2-10 gallons Model: 10i
or the other hand:
Azoo Palm Filter 16 gph up to 5 gallons is the rate the member is speaking of.
All these assorted filter systems are off of Dr Fosters & Smith online web site
I may be misunderstanding him, is he saying the water cycles 15 gallons per hour or 15 times per hour.
As you can see, you need at least a good 100 gph. Not 15 gph, but 100 gph which means the water, all 100 gallons are filtered through the filter, so the water goes through 100 times at one gallon each. Unless what he is saying is, like you are saying jos, that it is 150 gph, if this is the case, then his filter is fine.
So probably I just misunderstood him and as long as you understand him, then you have guided him in the right direction.
The main point is, he did get a filter, which was part of the other thread that he had going where he had no filter at all. So this is good news, in every sense of the word.
Thanks again for the clarification jos.