Welcome to AA, bigbites!
I wish someone would give me a couple of Fluvals!!!
I have a Fluval 104 on my 29 gal
and that gives a lot of current. The fish like it, but sometimes, I will see one get swept away and then hide behind the rocks and wood to rest. I have a 404 on my 50 gal
with fake plants at the surface to break up the current.
I would look for a cheap, but reliable filter such as the aquarclear for the 25 gal
tank. Check our www.bigalsonline.com
and eBay for good prices.