And then a power head for air?
There is a lot of purposes for the use of powerheads. They can be used to allow surface movements which provide extra oxygenation for the tank. They are also used as part of the filtration system by inserting the input flow tube on the sponge to create a sponge filter, intake pipe on a UG filter and many others.
the power head is a need. it suites the purposes that lupin said but it also creates turbulance and that makes your fush stronger. kind of a need. heres a question for ya, which fish is stronger? the one in the stream or the one in the pond? if you didnt get it now im sure you do. its always good to have a strong, healthy fish. i recommend the powerhead.
for a cheap but good canister filter that i think is good, go for the
Eheim Classic Canister plus 2217
The Eheim 2217 Canister Filter has a compact pump coupled with a large volume canister for filter media. The filter is for aquariums up to 159 gallons with a maximum pump performance of 264 gph and delivery head of 7 foot and 6 inches. It is extremely quiet, durable and long lasting. It provides high pump output and effective use of filter media for fresh or saltwater aquariums.
The "Full Space" design of Eheim's canister allows it to large amounts of filter media while making it more versatile. The filter comes complete with a safety hose-connection system to stop separation, all the filter medias needed to set up the filter, intake and outtake tubes, and double isolating valves. The Eheim 2217 is UL and CSA listed.
EHFIMECH should be used at the bottom suction area. It provides mechanical filtration. Next is a Coarse Filter Pad. The next layer of EHFISUBSTRAT will act as the main biological filter medium. The substrate's high porousity is ideal for bacteria colonization and ensures unbeatable long term decomposition of Ammonia and Nitrites. Next is a Fine Filter Pad and a carbon pad. Chemi-pure can be used as a replacement for the Carbon Pad for chemical filtration (10oz per 50 gallons) for freshwater aquariums. Depending upon the desired water quality, the layers of filter media can be increased. Specific water treatment can also be achieved with an individual filter media arrangement.
Filter: 8" diameter x 16" high
Tubing: 495 (5/8") tubing for intake.
494 (1/2") tubing for outtake.
FILTER MODEL-2217 CLASSIC PLUS
WIDTH-8 IN. DIAMETER
FILTRATION TYPE-MECHANICAL, CHEMICAL, BIOLOGICAL
MAXIMUM TANK SIZE-UP TO 159 GALLONS
Price on other sites $159.99
Price here: $127.99 onsale http://www.drsfostersmith.com/produc...pc=1&N=0&Nty=1
go for it if you want to spend that much.