I had a thread in the habitat section, but I'm starting this one since I've decided what filter I want.
My question is, will a 40 gallon tank be too small for a XP4? I'd like to get this filter because I know I'll be getting a new tank some time next year, and don't really want to buy the XP3 only to have it rather useless since the next tank will either be 75 or 90 gallons.
Also, my stand has 21" of clearance in the back cut out area, would this be enough for an XP4 that stands 17 inches tall? I just read it needs 26", but maybe that is just too generous.
Also, my tank is 17" high. Would the intake tube be too long? Also, would I need to remove the sand to prevent it from getting in the filter? The hang on filters don't have this problem since they don't come close to the problem.
Lastly, what media do you use and how often do you change it. What do you think of this filter?
Thanks.

