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Old 02-07-2012, 12:36 AM   #1
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New Owner of a 120 Gallon Tank. Which Canister?

Hey everybody. Last week I purchased a 120 gallon tank. I am super excited about it, and I can't wait to get it set up! (It will be freshwater) The problem is, I have never had a tank any where near this size before, and I feel like the more I read about canister filters, the more uncertain I am about which one will work best. I was looking at eheim or Fluval brands, but those are expensive so I don't want to get this wrong!

I was wondering if any of you guys had any information or tips for this. Should I get one large one, or two smaller ones? (say, 70 gallon?) At the very least, there are going to be 4 goldfish, so there is going to be a heavy bio-load. What do you guys think I should use for a set up?
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Old 02-07-2012, 02:08 AM   #2
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The more filtration and current, the better off you will be. How about 2 large canisters? I recommend at least 1200gph because of the high bio load. If you want to grow some plants, then you're better off with slower current and get really good lighting be because the 120g is pretty high. If you fill the canister with media, then the gph will reduce.
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Old 02-07-2012, 12:21 PM   #3
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Fluval FX5 read my review on it- I just got one, AMAZON best price- Petco lists them for like 450.00 no joke, Amazon has the best price I could find, and they have the best price on filter pads and such, If you need any help pm me, glad to help out. Have you figured out heaters yet also??

This one filter will take care of the whole tank and is as cheap or cheaper than buying multiple others, also look on amazon for the pricing of the filter pads and such, thats another selling point.

In my review I talk about a Magnum 350 not being able to do a good job, it wont trust me.

Fluval FX5 (writeup Review) Great filter
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Old 02-07-2012, 01:17 PM   #4
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Dear GNarnian,

I have a 125 tank with six goldfish. Goldfish need about 1volume filtration. So I have a combination of HOB (AC 110's) and 2 Penn Plax Cascade 1000's. I am very happy with both the AC's and the Cascades.

I bought the tank, etc used and it came with 2 Fluval 404/5 and both them 1) broke the hinges and 2) after the hinges were replaced never filled properly. (I tried 4 times, got help from this forum, etc.) Perhaps they were just too old to be used again, but I did not find them user friendly at all.

The Cascade 1000, however has been super and it's a very reasonable price.

Enjoy your new tank! The Goldies will love it!
Chris
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Old 02-07-2012, 05:31 PM   #5
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I had a 110 that I ran 2 Fluval 405s along with CPR Skimmers in - that seemed to work well
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Old 02-08-2012, 02:18 AM   #6
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Quote:
Originally Posted by didysis View Post
Fluval FX5 read my review on it- I just got one, AMAZON best price- Petco lists them for like 450.00 no joke, Amazon has the best price I could find, and they have the best price on filter pads and such, If you need any help pm me, glad to help out. Have you figured out heaters yet also??

This one filter will take care of the whole tank and is as cheap or cheaper than buying multiple others, also look on amazon for the pricing of the filter pads and such, thats another selling point.

In my review I talk about a Magnum 350 not being able to do a good job, it wont trust me.

Fluval FX5 (writeup Review) Great filter

Didysis, is the filter mostly silent? This might be a good choice for me. I really don't want to spend 600 dollars on canister filters if I can afford it! do you guys think a canister like this one, plus a BioWheel HOB might work out? maybe a Marineland Penguin Power Filter? Those are rated for 350 gph, combined with 900+ of the Fluval should give the range of turnover I'm looking for...
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Old 02-08-2012, 02:28 AM   #7
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Fx5 is very very quiet. Any HOB filter is loud when compared to canisters.

I have 2 fluval fx5 and 2 aquaclear 110 on my 120g tank. I Filled both fx5 with media, so flow drastically reduced to 600gph. I also filled both aquaclears with media.

Altogether, I think I'm getting ~2000gph. My monster also produce high bioload, but I mainly rely on 50% weekly water changes.
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Old 02-08-2012, 02:39 AM   #8
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I know that I will have media in whatever canister I deside on, which is why I'm leaning more toward 2 canister filters. If at all possible, I would want to keep my price below 400 for the canisters, but I realize that I cannot sacrifice quality for it or I will regret it later. Using your roundabout numbers, Terrance, If I get two fx5's with media, it would be approx 1200gph, at a cost of approx $460.00, not including the cost of media

Would two canisters be sufficient?
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Old 02-08-2012, 02:54 AM   #9
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Yes. 2 fx5 filled with media can get the job done. Use pond matrix as media.

I got both of mine on amazon for $425 including shipping. It's worth it, but I feel like canisters take long to clean on a weekly basis. That is the only drawback. So think long and hard before you decide.
I went from 4 hob to
2 hob and 2 fx5 to
1 big sump in the making

Lots of trading around, but sumps are awesome for fish with high bioload. Plumbing is tricky, but I enjoy doing it. If canisters didn't take long to clean, then I wouldn't be trying to trade both of mine away. I keep top notch water quality, but it shouldn't take that long. 2 fx5 takes about 40min to clean/rinse every week while I do my 50% water change. But you might not even mind taking up 40mins of your day.
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Old 02-08-2012, 02:59 AM   #10
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Cleaning these sounds like a "Make a group of friends help you" kind of job! Not that any would volunteer! Do the entire canisters really need to be cleaned every week? I heard and read that most only require the pads to be cleaned. on a weekly/bi-monthly basis. Where are the pads located?
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