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Old 10-13-2007, 11:59 AM   #1
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Canister filters

I've been studying canister filters looking for the best value. Here's what I found so far. It's sorted by lowest to highest cost per gallon per hour flow. I wish I could post a spreadsheet, but it's not allowed. What factors am I missing that are important in a high quality canister filter?


Price Make Model Gph $/gph Watts
$78 Marineland Magnum 350 Dlx 350 0.22 ?
$90 Marineland Magnum 350 Pro 350 0.26 ?
$285 Fluvalxxxx FX5xxxxxxxxxxx 925 0.31 ?
$300 Fluvalxxxx FX5xxxxxxxxxxx 925 0.32 ?
$160 Marineland C-360xxxxxxxxx 330 0.48 ?
$95 Eheimxxxxx Ecco 2236xxxxx 185 0.51 5
$150 Reactionxx EFU 45xxxxxxxx 290 0.52 32
$135 Reactionxx EFU 35xxxxxxxx 250 0.54 27
$85 Eheimxxx Ecco 2234xxxxx 156 0.54 5
$120 Marineland C-220xxxxxxxxx 220 0.55 ?
$70 Eheimxxxxx Ecco 2232xxxxx 127 0.55 5
$147 Fluvalxxxx 305xxxxxxxxxxx 260 0.57 15
$200 Fluvalxxxx 405xxxxxxxxxxx 340 0.59 21
$96 Marineland C-160xxxxxxxxx 160 0.60 ?
$120 Reactionxx EFU-25xxxxxxxx 198 0.61 23
$113 Fluvalxxxx 205xxxxxxxxxxx 180 0.63 9
$94 Fluvalxxxx 105xxxxxxxxxxx 125 0.75 9
$370 Eheimxxxxx Pro III 2080xx 450 0.82 30
$230 Eheimxxxxx Pro II 2126xxx 250 0.92 25
$500 Eheimxxxxx Pro III 2180xx 450 1.11 30
$340 Eheimxxxxx Pro II 2128xxx 250 1.36 25
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Old 10-13-2007, 12:12 PM   #2
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Rena xp filters are better than fluvals and alot cheaper than eheim.
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Old 10-13-2007, 12:34 PM   #3
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It is all a matter of personal preference, you will get a lot of varying opinions here. The Eheim is a good filter but overpriced IMO. I have Rena XP filter and Fluvals and I find the fluvals do a better job of cleaning and the XP's are easier to clean.

What size tank are you looking to put it on?
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Old 10-13-2007, 06:47 PM   #4
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There are several factors to consider when buying a canister filter (i.e. size of tank, fish population, plants, local availability, etc.) Where are you located and can you tell us more about the tank you are going to use the filter with?
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Old 10-13-2007, 09:34 PM   #5
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rena works greak for my 125
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Old 10-14-2007, 12:25 AM   #6
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Quote:
Originally Posted by NoSvOrAx
Rena xp filters are better than fluvals and alot cheaper than eheim.
I rejected the Renas early on because I got a copy of the users manual from the manufacturers site and they have manual priming using a funnel (FilStar XP1-XP4). It seems like that would be a real pain.

Looking to put it on tanks anywhere from 20-72 gal. I want to be able to move it around.

From the pictures and descriptions, the Fluval FX5 seems to be by far the best around with electronic control, purge valves, clog free, etc.

"There are several factors to consider when buying a canister filter (i.e. size of tank, fish population, plants, local availability, etc.) Where are you located and can you tell us more about the tank you are going to use the filter with?"

I want to put it on planted tanks that also have fish. I do not usually use high fish density. For example, I have less than 36 inches of fish in my 72 gal community tank. I want to keep good flow and have crystal clear water. Oh, and I'm thinking that with a big powerful canister with lots of volume, I can go a lot longer between media changes and filter cleanings which would be really nice. Another reason I'm looking at canister filters is to reduce the extra paraphernalia in the tank
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Old 10-14-2007, 12:33 AM   #7
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The filter stays primed unless you empty the intake hose, which you only need to when/if you clean the hose. And when priming your filling only the length of the hose. I have/had a few Renas and I love em.
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Old 10-14-2007, 01:38 AM   #8
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A canister filter with enough flow for a 72 gallon is going to be blowing up a storm in a 20 gallon unless you can adjust the output. Canister filters can let you go some time without maintenance if you have plants to help keep down nitrates and have low fish densities. I still clean my canister at the beginning of each month anyway. I also recommend you look at the Hydor ETH inline heater. I have one and it is great.
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Old 10-14-2007, 08:50 AM   #9
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Quote:
Originally Posted by travis74
The filter stays primed unless you empty the intake hose, which you only need to when/if you clean the hose. And when priming your filling only the length of the hose

But don't you have to prime every time you change the filter? Also, if the electricity goes off, do you have to prime it again?

" blowing up a storm in a 20 gallon unless you can adjust the output"

I heard of someone who pointed the output at the wall of the aquarium to control the currents and liked the results.

"I also recommend you look at the Hydor ETH inline heater."

That sounds interesting. Will it work with SW? I had been eying canisters with integrated heaters too. I like the idea of reducing clutter.
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Old 10-14-2007, 12:39 PM   #10
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You only have to prime the Rena with the funnel if air gets into the line. When you do maintenance on the filter it has a shutoff lever, which disconnects the hoses (still full of water). You disconnect, clean the filter, then reconnect the valve w/hoses attached.

Leave the filter empty (don't fill with water); this re-starts the siphon and yer off to the races!
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