new aquaclear 110 - Page 2 - Tropical Fish Keeping - Aquarium fish care and resources
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post #11 of 25 Old 12-22-2011, 12:46 AM
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Effectively all the bacteria are in the filter, not spread out evenly throughout the tank. The filter provides the most oxygen and food because of the extra flow there, making it the ideal habitat for the bacteria. This means the bacteria will grow there. This does not mean the rest of the tank is sterile by any means, just that unless you are running an UGF effectively all the bacteria are in the filter.

You have two options. One is to run both for a couple weeks then remove the Aqueon. The other is to take the media from the Aqueon and put it in the AC110 for 2-4 weeks.
Would agree that in new tank's ,the lion's share of bacteria will be found in/on filter media. But over time,the nitrifying bacteria will colonize on all hard surfaces in the tank.
If it were otherwise,,then each time those who run HOB filter's with single cartridge changed their cartridges,they would lose all of their biological filtration.

The most important medication in your fish medicine cabinet is.. Clean water.
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post #12 of 25 Old 12-22-2011, 12:48 AM
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If they only have the one cartridge they are probably underfiltered, requiring the bacteria to colonize elsewhere, at least enough to keep that from happening.

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post #13 of 25 Old 12-22-2011, 11:59 AM Thread Starter
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Everything seems to be doing well in my tank and water parameters are still good. I switched directly over to the aquaclear. I am running the AC sponge, used filter pad from the aqueon, and I mixed in the biomedia I had running in the aqueon for a short period. I'm holding off on a water change until sometime next week to make sure everything stays ok.
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post #14 of 25 Old 12-22-2011, 12:12 PM
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Everything seems to be doing well in my tank and water parameters are still good. I switched directly over to the aquaclear. I am running the AC sponge, used filter pad from the aqueon, and I mixed in the biomedia I had running in the aqueon for a short period. I'm holding off on a water change until sometime next week to make sure everything stays ok.
Just my $.02, but always do your weekly water change as there is little/no beneficial bacteria in the water column - they are all attached to something solid. As a matter of fact, we sometimes think they live in the filter alone...but in the established aquarium, there is likely far more beneficial bacteria in the substrate than any filter.

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post #15 of 25 Old 12-22-2011, 12:39 PM
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there is likely far more beneficial bacteria in the substrate than any filter.
Prove it.

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post #16 of 25 Old 12-22-2011, 01:50 PM
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Prove it.
Folks the run cartridge filters with no other bio-media often replace the cartridge with no negative effects. Must be some beneficial bacteria somewhere

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post #17 of 25 Old 12-22-2011, 02:26 PM Thread Starter
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Just my $.02, but always do your weekly water change as there is little/no beneficial bacteria in the water column - they are all attached to something solid.
^^^ I knew this. It always seems so obvious and easy when I read it, but I worry about my tank and don't think straight sometimes. Thanks for keeping me in line!
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post #18 of 25 Old 12-22-2011, 05:45 PM
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In those situations yes, the bacteria will live somewhere else. If you have barely enough filtration then most likely the filter will not have effectively all the bacteria. But I think most people overfilter rather than underfilter. IMO that is like saying that filters don't filter because there are tanks out there without any filters. They use only powerheads or even only air stones. These are exceptions, but not disprove the rule.

Based on my experience with aquariums and my knowledge of biology, microbiology, and ecology the bacteria are much more likely to colonize a filter if adequate filtration is provided. They will not spread out evenly on any surface. The flow at the surface of gravel is not adequate to favor it over the filter.

The tanks I had that I moved the fish and filter and nothing else were not new tanks. They were old, mature tanks. I moved the fish and filter at the same time, and nothing else at all. There was no re- or mini-cycle.

Again, no surfaces in the tank are sterile, but with enough filtration effectively all the nitrifying bacteria will be in the filter.

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post #19 of 25 Old 12-22-2011, 06:47 PM
When it comes to beneficial bacteria, there's nothing sacred about power filters with or without ceramic bio-media. Nitrobacter and nitrosonomas bacteria merely need a 'platform' where oxygen and food exists in order to be prolific, water flow rate is not that important... the upper inch of any substrate, even fine sands, serves the need quite nicely. Actually, the modest flow of water circulation across the substrate and decor of most tanks probably provides as good or better 'food delivery' than the rapid flow through most power filters.

I do not disagree that there is bacteria in a power filter, explaining your ability to move fish and filter to a new tank with no resulting mini cycle. However, in the established tank, we could equally remove/replace a filter in a tank with the same success - because of the available beneficial bacteria in the eco-system.
This also explains how a handful of sand/gravel from an established tank can effectively bio-seed another new tank.


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post #20 of 25 Old 12-22-2011, 06:59 PM
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But it can't, and many other people realize that and flat out state that adding substrate is pointless. You may not, but that doesn't make it any more true.

You are still assuming that the presence of ammonia and nitrite everywhere means that bacteria will be everywhere. This is not so. They will not live where they CAN, they will live where conditions are best (higher flow).

I do not think that most mature tanks with adequate filtration could have all their filtration removed without issues.

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