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I need suggestions for filtration

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I need suggestions for filtration
Old 10-21-2011, 02:59 PM   #11
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What does everyone think of the Fluval U2? Good? Looks like it would be.
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Old 10-21-2011, 03:02 PM   #12
I have two AC 70's on my 60g and they are both silent.
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Old 10-21-2011, 03:04 PM   #13
Originally Posted by newby View Post
What does everyone think of the Fluval U2? Good? Looks like it would be.
I don't like it - not one little bit.
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Old 10-21-2011, 04:53 PM   #14

I run an EHEIM in my tank for exactly the same reasons, it's silent and doesn't disturb the water too much, can highly recommend them
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Old 10-21-2011, 05:14 PM   #15
Originally Posted by newby View Post
What does everyone think of the Fluval U2? Good? Looks like it would be.
Well it has 2 stages which is good. Probably lacks quiet a bit in actual media volume though. Will probably need weekly cleaning. Its also overpriced IMO... If you do like the Fluval U-series, get at least a U3. The U2 barely qualifies for being rated for 30 gallons.
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Old 10-21-2011, 05:20 PM   #16
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For a HOB aquaclear is good as Abbeysdad as already said. I have one on my 29 gallon tank (forgot the size now). It is quiet. I still like a canister better. Its just a look thing with me. I don't like seeing the filter hanging on the back of the tank. I have an ehiem on my 55 gallon and love it. They are both setup in my livingroom and both are totally quiet. So it just boils down to preference.
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Old 10-22-2011, 11:51 AM   #17
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Back in the 1980's i used HOB filters on my 25g and 55g tanks. I had one AC but didn't like the waterfall, but the others (can't remember name) had a directional spigot that was nice. When I moved cities couldn't take fish with me so these all went to other aquarists. One problem with the HOB, at least then, was that in a power outage one evening when I wasn't home it stopped; when power resumed it came on, but obviously no water, and burned the motor out. As soon as I walked in the door of the apartment I smelled it. That finished me permanently on HOB.

When I was again settled in the early 1990's I went with UG until my 90g when I was convinced to go with a canister. Never looked back after that. Now, my smaller tanks (below 50g) have sponge filters. One is an internal unit, made by Eheim, that is super; just a small motor and sponge inside the casing. They unfortunately do not make these any longer. The Fluval U series seems to be very similar.

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Old 10-22-2011, 01:15 PM   #18
Okay, I get no commission, but let me defend the lowly HOB in the face of all these "canister snobs"

There is no waterfall with an AC HOB unless your water level is low. Why have a low level in your tank. Water is inexpensive and another half inch or so solves the problem. My AC's have a lip to direct water across the tank surface. If the water is at or above this lip, there is no waterfall.

There is a return flow, but there is with any filter that moves water. In the case of the AC's the flow is across nearly the entire length of the filter. I minimize/eliminate the flow with a simple water bottle baffle (with holes made with a soldering iron) that cost me nothing except the water I drank from the bottle.

The HOB emptied and the motor burned out when there was a power failure? The only way the filter compartment can drain is if the tank level drops 6-8" or more causing the water to siphon back into the tank. This doesn't happen when the power goes out! I turn my filters off all the time when feeding and the HOBs just sit there full of water until the power comes back on and then they continue like nothing had happened.

Someone complained about seeing it on the back. Well most tanks are against a wall - I use a background so I don't see the back wall (or the filters and cords and such!).

I even saw where someone (in another thread) claimed that his AC filter media plugged and the tank was emptied all over the floor. I've blocked the flow on the outlet side of my AC filters and the water returns to the tank on the inlet side.

I don't where this stuff comes from?

One of my AC 70 HOB filters contains three (3) AC 70 sponges (no other media) making it an exceptional external sponge filter. It is set to low flow, maximum re-filtration.
My other AC 70 HOB filter, also set to low flow, is full to the brim with Seachem Matrix bio-media. It uses a Fluval pre-filter sponge wrapped in nylon stocking material on the end of the inlet tube to pre-filter and further reduce/slow the flow through the bio-media.
These are working great for me and the combined cost is less than the cheapest canister filter and maintenance is much easier since I can service the media without removing the filter or even turning it off if I choose not to.

Now, not all HOBs are created equally. And don't get me wrong, canisters are great and so are sumps when done correctly - but more for larger tanks. For small and mid size tanks, HOBs are efficient, cost effective and easier to maintain.

So, ladies and gentlemen of the jury, lets be careful and consider that the lowly HOB has been unjustly accused and discriminated against in favor of pricey Alpha Romeo can filters and even overly priced submersible eyesores.
The defense rests.
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Old 10-23-2011, 12:41 AM   #19
Dunno but my water line was up to the top trim on the tank and both the waterfall sound and the vibration of the motor were too loud.

I was at an auction today and one thing I've noticed is a box of a dozen used air driven sponge filters w/o any airpumps goes for a lot more then a box of used working HOBs. Oddly there was a fuval U3 there too.
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Old 10-23-2011, 01:35 PM   #20
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Guess I should clarify what I meant by "waterfall." On my old AC the water came out over a lip like a water fall, so it could not be "directed" anywhere, it just pushed out straight ahead. Wasn't the noise, it was the force of the flow that couldnot be controlled. This is not useful except in tanks with fish that need this strong a current. In a long tank with fast-weater catfish such as Hillstream Loaches, this would be ideal. But not in a tank of quiet water fish.
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