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Old 07-04-2012, 05:40 PM   #11
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Originally Posted by cwmont13 View Post
On my 50 there is a visible difference in how fast the water flows out of the filter when you slide the tube from + to -. It's not a lot but you can see it. Even on low there's a lot of movement but not a lot less bubbles. Some of that is because I have the tank water level lower right now to help with my cycle so I'm getting more splash.
So is it possible that because I have the top-of-the-line 110 model, the flow would be even less distinct when going from + to -, given the power of this filter's motor?

If that's the case, should I leave the knob at full, halfway or minimum output in your opinion? Where do you keep yours -- at max output?
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Old 07-04-2012, 06:29 PM   #12
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So is it possible that because I have the top-of-the-line 110 model, the flow would be even less distinct when going from + to -, given the power of this filter's motor?

If that's the case, should I leave the knob at full, halfway or minimum output in your opinion? Where do you keep yours -- at max output?
I can't really say on the 110 model and in fact my current 25 gallon tank is the first tank I've owned in almost 30 years. My old tank was a 55 gallon long and it ran with a UG filter with a powerhead. So I guess I'm a newbie with HOB filters .

Right now I'm running mine on the highest setting to help my cycle get kick started. When my cycle is complete I'm going to try different settings and see how it works.
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Old 07-04-2012, 06:37 PM   #13
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Right now I'm running mine on the highest setting to help my cycle get kick started. When my cycle is complete I'm going to try different settings and see how it works.
That's interesting -- because I am cycling as well, I'm wondering now if I should have the 110 on max flow output...however, according to Hagen, these filters actually filter more water per hour if they're left on the lowest flow setting, so the whole thing is just so ridiculously confusing...
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Old 07-04-2012, 07:06 PM   #14
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That's interesting -- because I am cycling as well, I'm wondering now if I should have the 110 on max flow output...however, according to Hagen, these filters actually filter more water per hour if they're left on the lowest flow setting, so the whole thing is just so ridiculously confusing...
That info from Hagen makes sense. They make the filter and know. The reason I have mine on max flow is because I read in one of the stickies (tips and tricks for your fastest fishless cycle) that it's good to crank up the filter to get some increased agitation.

I started my fishless cycle on June 13th and was having some difficulity with my tank processing the ammonia. It was moving very very slow trying to process the 4 ppm doses. On advice from member jlk who's been helping me and many others, I did a 100% water change and dosing only to 2 ppm this time. We'll see how it goes and move up the dosage from there when the cycle kicks in.

I'm also seriously considering adding some seeded active filters from Angels Plus. The price is reasonable and hey, if it speeds things up I'm all for it

Sponge Filters for aquariums
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Old 07-04-2012, 08:41 PM   #15
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That info from Hagen makes sense. They make the filter and know.
How does it make sense, though, if reducing the flow creates more filtration per hour?

Well, at any rate, I am going to consider some insight that was offered to me from another forum: Why buy an HOB as powerful as the AquaClear series models and NOT run it at maximum filtration? That to me is a good argument for keeping the filter at 100 percent flow output -- THAT IS, assuming Hagen wasn't spot-on with their figures of the water being better filtered at a LOWER setting...
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Old 07-04-2012, 09:05 PM   #16
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Originally Posted by ArtesiaWells

How does it make sense, though, if reducing the flow creates more filtration per hour?

Well, at any rate, I am going to consider some insight that was offered to me from another forum: Why buy an HOB as powerful as the AquaClear series models and NOT run it at maximum filtration? That to me is a good argument for keeping the filter at 100 percent flow output -- THAT IS, assuming Hagen wasn't spot-on with their figures of the water being better filtered at a LOWER setting...
It all has to do with contact time with the filter media I think. Other wise it just blows the water in and out it barely has time for contact. That's the only thing I think they could be referencing.
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Old 07-04-2012, 09:56 PM   #17
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It all has to do with contact time with the filter media I think. Other wise it just blows the water in and out it barely has time for contact. That's the only thing I think they could be referencing.
That makes sense. Water is physically moving slower through the filter at a lower setting and taking longer to pass up through the media so it gets filtered more. On the other hand you're not passing as many gallons per hour through the filter as you are with higher settings.

That being said, if you are running a larger filter on a smaller tank like I am with my 50 on a 25 gallon tank. I still think that even with a lower setting I'm still able to pass my 25 gallons through there pretty quick and get the benefit of better filtration with the lower setting.

Who knows? Confusing to say the least. I guess if the waters clear then everything is good.
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Old 07-04-2012, 10:11 PM   #18
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I don't know, fellas; the whole ordeal is odd and confusing to me -- I suppose I can just leave the filter at wide open and max output for now, even though my little Black Moor does seem to be getting moved around a bit from it...

My wife brought home some more plants (artificial) and a tree stump decoration from Petsmart when she went earlier to pick up some cans of food for our dog, and so our aquascaping continues in the 60 gallon -- all the stirring up of the gravel to get this stuff in caused the water to go cloudy again, however, so I'm letting the 110 run full blast to try and get some of the water cleaned out quickly...

We put the "tree stump" piece towards the left of the tank, with taller plants behind it and some small ones "popping up" from holes within it in front, and so this was a nice welcome "natural decor" element...however, I just don't know if this layout is going to come together the way I want looking at it now...we have the tree stump piece on the left side with tall plants and the Chinese "temple" decoration on the right side of the tank, with some cut-up pieces of Marineland's "plant mat" near it to immitate a "Chinese garden"; yet, I don't know if the Asian/natural theme is going to work as a hybrid...and I don't know what we're going to use as a central focal point for the tank (I'm thinking log caves/formations) and what kinds of plants to put around that...

That's a whole new thread, though...
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Old 07-05-2012, 12:21 AM   #19
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Hi Artesia,

I have an AC-50 on a 29-gallon. When new, I remember it making a lot of micro bubbles. Give your filter some time to buid up slime in its internal housing and the bubbles will lessen.

As for the flow, there's very little difference between the min/max output. Try feeding at the farthest point from the output.

It's one heck of a filter, and I wouldn't trade it for any other HOB filter.

David
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Old 07-05-2012, 01:32 AM   #20
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If the filter is on the lowest setting, the water gets filtered at the same speed, but it is recycled from the end of the filter "basket" and then it is sucked back into the intake from the part of the pump that is not covered by the intake tube. This means that water is being sent through the media at the same rate, but it is being recycled through the media leaving the water with less ammonia with each pass. But, each time the water goes through it has less ammonia than before, so the bacteria are going to be converting the ammonia less and less with each pass. So if the filter is set to 50% intake, for example, then half of the water is from the tank, and would be full of ammonia, and the other half would have much less ammonia. So running the filter at maximum flow, the water that is getting filtered would have more ammonia than the average of the water when set to the lowest setting, therefore running the filter at maximum flow would be the best option. Plus, the mechanical media will be filtering more water with particles in it on full flow.
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