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Right it's the AquaClear HOB's. Best out there IMO as far as HOB's are concerned. However, I am becoming a fan of the old school super simple sponge filter. Cheap, effective, easy to maintain...what's not to like.
 

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Fluval HOB's. Right now using 2 C4's on my 55 and they are whisper quiet compared to the 2 Aquaclear 70s that I used to have. Plus the media in the Fluval is almost like that of a canister. It doesnt have preset filter media like normal HOB's do. It has a compartment to fill with the bio rocks and a filter pad with a carbon insert. A lot better setup than the Aquaclear.
 

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The AquaClear 70 and the comparable Fluval C4's are both made by Hagen and use the same motor/impeller and quite similar housing. The C4 is different in how the water flows through the compartments and that it incorporates an interesting wet/dry section in the bio-media. I like the simplicity of the popup indicator when the (mechanical) sponge filter becomes loaded restricting flow.
Both are excellent filters and rule the HOB world over cartridge filters.
 

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The AquaClear is a great filter. I think the Fluval C series is more bell and whistle than cleaning. The only problem with the AquaClears are the horribly designed intake strainers.
As I mentioned in the other forum, I don't get your complaint as the intake strainer is not really any different than any I've seen. So what exactly is your complaint?

Also, I think the Fluval C series as an excellent filter that allows removable compartment maintenance while still providing fish keeper preferences for filter media - the fluval C's are the first HOB to my knowledge to incorporate a bio wet/dry in a HOB filter. I'll grant you that a pop up indicator based on reduced flow may not be necessary. However, IMO, both the AquaClear and the Fluval C series are much better than the cartridge type HOB power filters out there. :)
 

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I used to run for years ,,the Emperor series filter's by Marineland and liked them alot ,but the Aquaclear
110'S and 70's that I now use are much easier to clean.
No cleaning of the spray bar's,no cleaning /replacing the little plastic bearing's that help keep the biowheel turning smoothly and frequently became mysteriously lost, and more room for media.
I also love the Eheim Canister's.

I WOULD like to see larger diameter opening's for intake on the Aquaclear, for it does not take much to clog it in my planted tank but I have remedied this by placing prefilter over the intake after lopping off about one inch with a hacksaw.
Doesn't seem to be an issue in unplanted tank, but free [email protected]!! Baby tear's ,courtesy of my sister donating some plant's while I was out,precipitated the modification for me.
Aquaclear 110 pushes more water than any other HOB filter I know of, and you all know how I LIKE flow.:lol:
 

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The intake strainer on the AquaClears is way too small for the flow they have. I have seen apple snails sucked out of their shells when they reached the intake. I have seen healthy fish sucked to and pulled through the strainer. It is unbelievable that Hagen makes the AquaClears which have the worst intake strainers I have ever seen and Fluval canisters which have the best I have ever seen. They require prefilters IME and and Hagen doesn't have anything that fits them well. Prefilters are just an unnecessary additional piece of equipment to clean.
 

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The intake strainer on the AquaClears is way too small for the flow they have. I have seen apple snails sucked out of their shells when they reached the intake. I have seen healthy fish sucked to and pulled through the strainer. It is unbelievable that Hagen makes the AquaClears which have the worst intake strainers I have ever seen and Fluval canisters which have the best I have ever seen. They require prefilters IME and and Hagen doesn't have anything that fits them well. Prefilters are just an unnecessary additional piece of equipment to clean.
Not if you got small fish, and shrimp.;-)
 

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I said IME prefilters are needed with AquaClears.
Well I have two running AC70 filters. One is a dedicated Seachem Matrix only bio-filter that uses a Fluval sponge pre-filter (which costs about a buck and fits over the inlet tube just fine). The other just uses the inlet tube outta the box and I've never seen a problem even with small fish, including neon tetras. Of course, it would be a problem with small fry, but so would almost any standard inlet strainer. I have to admit that both of my filters are set for minimum flow/maximum re-filtration and I'm sure that's a factor in this discussion.
When you think of it, a very fine inlet strainer is a double edged sword. As much as it protects drawing in tiny creatures, it also prevents fish/plant detritus from entering the filter, serving only to quickly plug the inlet.

Even still, if the complaint is resolved with a dollar pre-filter sponge or a piece of old panty hose the Mrs. (I'm hoping not yours) will never miss, how much of a valid complaint is it really?

I've also heard some complaints that the return flow from the AC filters is too great. A 'problem' I solved by making a baffle from an empty water bottle that cost nothing.

:)
 

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The AC70 has lower flow than the AC110, especially when you turn them down all the way. The problem is the sizes of the holes in the intake strainer, is the overall size of intake strainer. Compare them to the Fluval canister intakes and you see how much larger those are, the flow is spread out a lot better. You are using a prefilter. I don't want to spend my money on a good filter just to have to make modifications to it (no matter how cheap) to make it usable. I also should not have to go in to the tank to clean an ugly prefilter because of their bad design.
 

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"It's better to light one candle than curse the darkness."
 
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