Posted: Sat Aug 04, 2007 1:42 pm
The 2217 model is one of Eheim's "Classic" line of filters, as opposed to its Pro 2 Series (which includes the much lauded 2028) and the more recent Pro 3 Series. A self-described Eheim fanatic uses the 2217 on 40-gallon breeder and 55-gallon tanks and says they're a great filter. I would think, depending on what else you've got in the tank, they would be OK in a 75-gallon tank, but personally, I'd go for a more powerful filter.
One difference between the filter you're considering and the Pro Series filters is that the latter have an auto prime button. And, if you're using the spay bar above the water line and the power goes out, the filter will need to be reprimed.
I've read that currently, for Classic series filters, Eheim is prepacking the filter with not only media and sponges, but also, as a bonus, quick connect tube valves as well. This would make it much easier to clean the filter. (It would be good to confirm this if you're going to buy the filter.) The quick disconnect hoses are standard with Pro Series filters.
Eheims are pricey, especially the Pro Series. You need to do a little searching and compare prices, but they're considered to be great, long lasting filters. The 2217 is supposed to give good value for the buck. If you can afford it, though, I'd go for something like a 2028 Pro II.
"You become responsible, forever, for what you have tamed." -Antoine de Saint Exupery-