Originally Posted by houseofcards
That information is also supported by 'The Book of ADA' which gives the specs of some 'photo shoot' tanks in terms of equipment, co2, maintenance. The filter used on the 6-footers is the Super Jet ES-2400 which has a flow rate of about 480 GPH out of the box from what I can tell (someone correct me if I'm wrong). That would give a 180 with that filter a turnover over under 3x out of the box.
From a maintenance side, yeah the gallery could be over maintaining, but what about co2/fert delivery on such a long tank with that flow? I don't see any deficiencies from lack of flow.
I agree with your point. You read a lot in the forums that you need a filter that turns over your tank 10x per hour, in tank diffusers can't supply enough CO2 for a larger tank, etc. Then you check out the specs on ADA's tanks and find them to be a bit of a contradiction to all of that. Which leads me to think that one doesn't need a pump moving 750gph on a 75g tank and a quality in tank diffuser is more than sufficient.
Not that I have any experience with one, but one of the points that ADA makes about the Superjets is that they deliver the gph that they're rated for and maintain it despite media becoming clogged. That's not something other manufacturers claim and I can certainly attest that it isn't the case with my Eheims either.