Filter Question

  • We are currently upgrading MFK. thanks! -neo

RTCfan86

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MFK Member
Feb 25, 2009
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Fraser, MI
Will 2 HOB filters, each rated for tanks up to 70 gallons, be sufficient together on say a 115 gallon?
 
I have a little over 7x turnover for my 75 (530 gph) and it's still not enough, then again, my tank is overstocked with 15 fish. I'm waiting on an Aquaclear 110, plus I have two sponge filters as well.
 
-It is depend on what kind of fish do you keep..e.g chiclid or goldfish(short intestinal system) is more talent to produce ammonia through their feces etc.
-the way you feed your fish(avoid from overfeeding etc)
-Depends on your tank size
-HOB lack on biological space.. I put some small bio-ring between filter chamber.
-Even 1x arowana is enough to use box corner filter.
-For me,to choose a filter is easy maintenance and effective.
 
Tank is about 115 gallons (72 x 18 x 20). I'll be keeping a few SA cichlids and maybe 3 pictus cats. Don't think that's too much stock for the tank.
 
Depends on the filter and your ability to maximize the bio section of said filter. Flowrates are good points of reference, but have little actual value when predicting a filters ability to handle bio load. A lower flow filter with larger media capacity will outperform a higher flow one with less media space. Eheim 2080 and Fluval fx5 is a perfect illustration of this. The Eheim outperformed the fluval with about half the flow, but twice the bio volume.

For most setups, 3-5 times turnover is suggested but I think you'd have to stock pretty lightly to pull off 3. I set up my systems at about 7x with large biofilters and have no issues regardless of my stocking levels.

IMO though, two filters rated for 70 gallons each would work for very light stocking. Get 2 rated for at least 100 each and you'll be better off in the long run.
 
Thanks for all of the advice. I'm going to try the 2 HOBs, giving me a 6x turnover. My tank will not be heavily stocked, so I think I'll be in good shape.
 
Will 2 HOB filters, each rated for tanks up to 70 gallons, be sufficient together on say a 115 gallon?

You have $100 to spend??????Purchase two Aqus Clear 101's...........Then go spend the rest of the change on building a DIY wet-dry sump filter..............Of course the return pump will cost $75-89, but the DIY filter will be an awsome biological filter...........
 
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