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Old 03-04-2013, 01:45 AM   #1
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AquaClear (110) Flow Control Valve Question...

Those of you familiar with Hagen's line of coveted AquaClear HOB filters will know of the "flow control valve" that sits atop the intake stem when you put the filter together, and which is supposed to control the flow output of returning water...in practice, I have found, on my 110 model at least, that this doesn't actually control anything. If I keep the flow control at the "minimum" flow (going towards the "-" indicator), the flow is reduced maybe just a tad bit...but nothing that would make one say "Wow! Look at that! Much different!"

At any rate, because my fancy goldfish tend to be blown around my 60 gallon from anything resembling a current, I have been trying to reduce whatever turbulence I can including lowering the output of the bubble bars via the Top Fin pump's control wheel to keeping the AquaClear's return flow valve at minimum output -- the other HOB I run on this setup, an Aqueon QuietFlow 55, doesn't have a flow control feature -- but my question is this: Is it okay to leave the AquaClear 110's flow control on its minimum output? Will this affect filtration, ultimately, in any way? I have read, and have gotten into discussions with enthusiasts, about some theory that when the flow of these HOBs is reduced, the filtration is actually maximized because the water is flowing through the box slower, thus allowing more fine debris to be pulled up...is this true?

Further -- I don't really see a flow difference, as I have said, between maximum and minimum output on this HOB when moving its valve around, but being that I wanted to reduce turbulence and agitation in the tank I decided to bring the control down to minimum in the slight chance it is making a difference with pushing the fish around too much; is this okay to run the filter on the low return position?
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Old 03-04-2013, 01:46 PM   #2
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That's perfectly fine to leave it at the lower flow it's actually better for it for thae exact reason that you already stated. The water has more time to go through the cleaning process therefore you get cleaner water. I have two AC70's on my 60 gallon tank and they keep the water crystal clear. I just added the second one this weekend and let me tell you WOW what a difference in water clarity.l I leave my AC's on low flow all the time your supposed to run it on high for the first minute to get it to flow right and to max out for a bit then put it on low.

The other good thing about these filters, also I only use AC's in ALL MY TANKS, is that you can change out the filter media however you choose. I don't run carbon becuase it's useless unless your taking medication out of the water you don't need it. I run two sponges and Bio media in one and one sponge, two bio media, and another smaller water polishing pad in the other. I bought media bags at PetSmart for $.99 now I can buy whatever media I want doesn't have to be Fluval and I use it if it benefits my tank. AC's are by far the best HOB filters available, that's just my opinion though lol.
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Old 03-04-2013, 01:48 PM   #3
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I have 2 110's on a 55 grow out and know to not even bother with that thing haha. Them poor fish look like they are in a washing machine.
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Old 03-04-2013, 09:46 PM   #4
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Thank you, both!!
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Old 03-04-2013, 09:57 PM   #5
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I can never tell the difference either way. I don't even know what there on now TBO.
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Old 03-04-2013, 10:39 PM   #6
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I can never tell the difference either way. I don't even know what there on now TBO.
Indeed, D; I don't really see any difference -- as I indicated in the original post -- when the valve is on minimum or on maximum...it seems to pump the same amount of water out, which is very strange...
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Old 03-05-2013, 12:02 AM   #7
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Indeed, D; I don't really see any difference -- as I indicated in the original post -- when the valve is on minimum or on maximum...it seems to pump the same amount of water out, which is very strange...
Yup! I stopped wondering why a long time ago lol. As long as its flowing I'm happy and so are my misfits
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Old 03-05-2013, 01:54 AM   #8
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Yup! I stopped wondering why a long time ago lol. As long as its flowing I'm happy and so are my misfits
I think Yogi was on to something, though, about my initial feelings regarding leaving the filter set to the "lowest" flow output; seems if it's set this way -- and Hagen confirms this through their literature accompanying the filters -- more water is getting to be filtered through the media basket at a slower rate, making for reportedly clearer water. While I don't see much of a difference either way, as we have been discussing, it makes me a bit more comfortable knowing the goldies aren't being blown around, perhaps, so hard if the AC's return flow is even a LITTLE less on that end of the tank...
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Old 03-05-2013, 08:07 AM   #9
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I leave mine wherever lol. But I have African cichlids. I also use a power head
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Old 03-05-2013, 10:23 AM   #10
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The flow rate difference is going to be minimal when you go from low to high but if you think about it increasing water flow even a little bit can cause a big difference in gallons per hour. We look at the amount of water flowing on high and low and we say that's not a big difference but how much water is flowing through the course of a day, week, or even a month how many more gallons would circulate through that filter? But like stated before its not the amount of gallons but how well those gallons are being cleaned and these AC's perform at optimum levels being on the lowest flow rate.
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