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Old 10-07-2004, 07:43 PM   #1
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Canister filter: which is better, one big or two small?

So I am setting up my new 75 gallon bowfront tank. I plan on installing both an undergravel filter and use it in conjunction with a canister filter. I want to hook the canister filter to the undergravel filter, either a traditional flow pattern or perhaps a reverse flow (opinions on that appreciated, too).

Since the undergravel filter will have two riser tubes, now I am wondering. Which one of these would be best?

1. One canister filter, full capacity designed for my size tank.
2. Two canister filters, one for each riser tube, each a smaller capacity but together enough for my size tank.

Also, if I go with #1, should I make one riser tube the inflow and the other the outflow, or should I make a Y-connection and hook them together?

Thanks much!
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Old 10-07-2004, 08:42 PM   #2
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Get a good canister like the Fluval 404 and totaly forget about the undergravel filter they are NO good.
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Old 10-07-2004, 09:14 PM   #3
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I figure an undergravel in reverse flow would be beneficial in keeping the gravel from oversaturating. I am not particularly interested in actually using it as a filter, per se. Have anything else constructive to add, btw?
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Old 10-07-2004, 10:10 PM   #4
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Yeah, why get nasty when someone tries to give you GOOD advice?
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Old 10-07-2004, 10:16 PM   #5
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yeah, why get nasty when someone tries to give you GOOD advice?
Because what you gave was not advice, it was a lecture. Do not tell me something is NO good, then not back it up with reasons why. And do not say it is because they are no good as filters, because I told you I am not using it as one.
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Old 10-07-2004, 11:36 PM   #6
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[center:c79fade8fa] Welcome to AA, Presence! [/center:c79fade8fa]

Oscarbreeder gave good advice. UFGs are more trouble than they are worth. By vacuuming the gravel, that will get out the excess food and waste. UGFs tend to allow guck to build up.

I don't understand:
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Originally Posted by Presence
I figure an undergravel in reverse flow would be beneficial in keeping the gravel from oversaturating.
What exactly is "oversaturating" the gravel?

A filter such as the Fluval 404 is plenty of filtration for a 75 gal tank. I have only one large canister filter on my African cichlid tank and have had no trouble with it. I vacuum the gravel while doing a 25% PWC weekly.
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Old 10-08-2004, 02:18 AM   #7
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What type of tank you are setting up? African or planted (heavy or not)?

From my exp, a UGF will break down every 8-9 months regardless its a std or reverse flow in a planted tank as you cannot clean the gravel properly due to the plant's root. Now i am using only a canister in the planted tank.

Btw i think you are very rude to someone whom are only trying to advise you.
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Old 10-08-2004, 02:21 AM   #8
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What type of tank you are setting up? African or planted (heavy or not)?

From my exp, a UFG will break down every 8-9 months regardless its a std or reverse flow in a planted tank as you cannot clean the gravel properly due to the plant. Now i am using only a canister in the planted tank.

Btw i think you are very rude to someone whom are only trying to advise you.
Imitation plants all the way.
Like I said, I was not given advice, I was given a lecture. UGFs may be "NO GOOD," but at least you took the time to explain why. I suppose I should have lectured him/her on the poor grammar usage and run-on sentence?
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Old 10-08-2004, 02:42 AM   #9
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First off, I would say it is poor form as a newbie to this site to insult veteran members who are trying to help you. THis will only hurt you in future requests for assistance.

Secondly, there is PLENTY of previous topics regarding the effectiveness or lack thereof of an UGF. My advice would be to do some research first, ask informed questions second.

BTW

Feel free to critique my grammar and spelling as you see fit.
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Old 10-08-2004, 02:55 AM   #10
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Best wish for you tank, anyway probabily this will be my last time trying to advise you, for fear i might "lecture" you, me also bad bad grammar and typo....
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