The RENA XP canister filters are wonderful filters for the price, ease of set up, amount of media it will hold, and maintenance. The four common variations of the RENA canister are the XP1, XP2, XP3, and XP4 and their output ranges from XP1 - 250 gph (up to a 55g), XP2 - 300 gph (up to a 75g), XP3 - 350 gph (up to a 175g), and XP4 - 450 gph (up to a 265g). Of course, with the canister fully filled with bio-media the output of these canisters decreases, but still the XP filter has one of the highest gph turnover per dollar on the market. Thus, for the price (ranging on-line from $50 to $179), the turnover to price ratio brings unsurpassed value to these canister filters. Below is a list of high light of features of the Rena canister filters:
Easy to Use:
Self-priming, easy start system.
Unique one-step water shut-off and disconnect control lever.
Easily accessible flow control from above tank level.
Disposable filtration pouches for easy clean-up.
Multi-use filtration baskets with handles for easy maintenance.
Built in handles for easy carrying of filter during maintenance.
Easily accessible impeller.
Efficient 3-stage filtration: mechanical, chemical & Biological.
Bypass-free: ensures complete water flow through the filter media. (see picture below)
Maximum capacity baskets hold large amounts of filtration media.
Long-life shaft will not degrade, even in salt water.
Unique anti-airlock system ensures continuous flow.
Self-locking water shutoff system prevents accidental flow during maintenance.
Rubber feet prevent slipping and dampen noise and vibration
Barbed nozzles and safety clips (included) ensure a water tight connection.
Anti-overheating design protects motor if filter is clogged.
The only items that I would like to point out is the self-priming feature. This feature is not a easy as other canisters, with "self-priming levers", that will start, fill, and prime the canister. IMO, this canister filter is not self-priming, but will prime easily with a bit of help. Second, the intake and return "U" clamps do not conform to the rim of your tank. Thus, not providing a solid fit, but with the use of the supplied suction cups everything works out.
All-in-all, I rated this canister filter a 4- GREAT for the price, media it will hold, ease of use/maintenance etc. I would definitely recommend this filter to other member.
I own two XP3's and for the money they are one of the best canisters IMO. They hold a good amount of media and have a nice flow rate, they also seem to be made of quality material and parts. I rated it a 4. Keep an eye out as they go on sale quite a bit and if you can catch them for the price I did ($75-$100) definitely pick one up.
The canister part itself I like, but the cheap plastic parts that go in the tank for the intake and return de-value this product. Overall its good, but they really need to find a better way to attach to the tank.
just got one today. picked up the xp3 for a 75 gallon tank. water has been cloudy for a week, penguin powerfilter with bio wheels couldnt get it clear. got this all hooked up and in about an hour the water was nice and clear. just wish it came with more media. but so far so good.