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This is a discussion on Over-Stocked? within the Beginner Freshwater Aquarium forums, part of the Freshwater Fish and Aquariums category; --> Originally Posted by TexasTanker I would never put a bristle nose pleco in a ten gallon tank. They get too big for that. I ...

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Old 05-11-2010, 05:46 AM   #21
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Originally Posted by TexasTanker View Post
I would never put a bristle nose pleco in a ten gallon tank. They get too big for that. I was referring to the various kinds of cory and catfish that stay below two inches. If I'm not mistaken their bioload would the equivalent of a same size tetra or like sized fish that is not actively or quickly growing.

What I said, is I do not count them in my "inch count" but I also said they have to be accounted for. Which means bioloads. At a certain point extra filtration, plants and all that cannot compensate the extra fish. But a better filtration system can allow for a few extra "inches" to be tacked onto the standard "inch rule". Three cory and six guppy is a sustainable bioload for a ten gallon tank. Assuming they have fry, they could very easy throw off that balance, but as others have said, short term is doable. Keeping the ten gallon as a strictly fry tank with the intention of releasing them to the larger tank later, assuming that tank can handle the load is also a practical plan.

Its just about maintenance and careful balancing.
The bristlenose was just an example; I didn't mean to imply that it was going in a 10g (specifically, your ten gallon) or anything like that. I just meant to illustrate that algae-eating fish have disproportionately large bioloads. The inch-per-gallon "rule" is meant to be an approximation of a fish's bioload on a tank, so going by that rule a 4-inch bristlenose would have to count 12-16 inches against your inch tally for the tank. That said, I find the inch-per-gallon rule problematic on a number of levels. There are slightly better rules but really no simple, easy-to-remember rule is going to do a good job of telling you how many fish you can put in the tank. I try to take all (or at least most) of the stocking considerations into account when stocking a tank. I wrote up this guide that covers many of them in brief:

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Old 05-11-2010, 08:49 AM   #22
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I consider mass and growth for bio loads. Plecos on their own seem to have a disproportionately large bioload, but I attribute that to their growth factor. For that I wouldn't put cory cats into the same bioload category as plecos. Yes they're bottom feeders or algea eaters, BUT the outputs are drastically different. For hte purpose of this thread I was and will continue to refer to the original poster's existing population of cory cats. lol do they have an avatar for beating a horse? Sorry. I need caffiene. I like your guide btw.
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Old 05-11-2010, 06:57 PM   #23
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Agreed. Corydoras have a much lighter bioload than same-size plecos and pleco-esques (i.e. otos and other suckermouth cats) that feed mainly on veggies.
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