Which is the best type of filter for my aquarium with Black mollies? - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 11 Old 02-12-2010, 11:08 PM Thread Starter
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Which is the best type of filter for my aquarium with Black mollies?

i have a bare bottomed aqaurium and i would like to know that which is the best type of aquarium filter? I have not got any live plants and my aquarium if 15 gallon so which will be the best type of aquarium filter for me? I am also planning to breed some Black molly fries so please suggest me a filter which will not harm the little fries and will not make them stressed.
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post #2 of 11 Old 02-13-2010, 12:18 AM
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I like a good old fashioned sponge filter, with an air pump. The sponge acts as a biological filter and the water flow is gentle enough not to bother the fry.

Dual-Action Foam Filter - Triangle - Up to 25 Gallon | Sponge Aquarium Filters | Filters | Aquarium - ThatPetPlace.com
Whisper 20 Aquarium Air Pump | Air Pumps | Air Pumps & Supplies | Aquarium - ThatPetPlace.com

You can hide the sponge with some rock work or plants. Cleaning is simple... just a quick rinse every few months inside a bucket of discard aquarium water.
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post #3 of 11 Old 02-13-2010, 01:07 AM Thread Starter
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Now even i am planning on having a nice little sponge filter but the problem is that when there is waste material gathered near the decor in the aquarium then that waste just sits over there and the filter is not able to catch that waste so i need to clean that manually.
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post #4 of 11 Old 02-13-2010, 01:44 AM
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Well, if you're doing water changes on a regular basis you can just use a gravel vac to suck up any waste that you see during the water changes.

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post #5 of 11 Old 02-13-2010, 01:47 AM Thread Starter
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right now my aquarium doesn have any filter and i do a water change weekly and i manually remove all the wastes using vaccume suction so if what i am doing right now is alright then do you people suggest me to continue that?
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post #6 of 11 Old 02-13-2010, 01:51 AM
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I would get a filter like Pasfur suggested, but if you don't have strong mechanical filtration (probably a good idea in a fry tank) then you're probably going to have to remove a lot of detritus manually with the vac.

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post #7 of 11 Old 02-13-2010, 01:56 AM Thread Starter
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When i have some fries then at that time i will be doing a water change every alternate day so whenever i do a water change i can remove the waste using vacuum suction and that will be done every alternate. if i do it that way then still i will be in need of a filter?
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post #8 of 11 Old 02-13-2010, 03:16 AM
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Yes. The main purpose of the filter is not to remove solid waste but rather to serve as a place where beneficial bacteria can live and grow. These bacteria process the toxic ammonia that your fish give off into nitrite and then into nitrate, a substance that's much less toxic to your fish. Without these bacteria, ammonia levels in an aquarium quickly climb, leading to dead fish. Check out the links I posted in your other thread about the aquarium cycle to learn more about these bacteria and the aquarium cycle in general.

The sponge filter Pasfur mentioned is very good at providing a place for lots of these bacteria to grow but it isn't powerful enough to suck up small fish fry, which makes it ideal for fry tanks.

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post #9 of 11 Old 02-13-2010, 03:22 AM Thread Starter
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well that is the sponge filter which he has suggested and they are popular in my place and since i am using them but they are not able to clean the complete aqaurium as some of the dirt particles are not cleaned by them.
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post #10 of 11 Old 02-14-2010, 02:02 PM
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I'd just get a power filter and cover the intake with netting.
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