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Discussion Starter #1
I have an established planted 55g that's been running for 2 years. It's running 2 HOB Fluva C4 filters that's rated for 70 gallons. The current stock is as follows, 6 black mollies, 9 cherry barbs, 10 bloodfin tetras and 9 albino cories.

I plan on starting another planted 55g that I want to have 15-20 serpae tetras, 8-10 peppered cories and 1 bristletoe nose pleco. Going to transfer one of the C4 filters from my established tank to the new one. Will this give me an instant cycle to where I can put my entire stock in immediately? I will plant heavy to start also to help out, also transfering a couple of the plants from older tank to help with beneficial bacteria. How should I go about this? Hopefully the filter has enough of B.B. to stock completely. I do know I would have to monitor things closely either way though.
 

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In my opinion no it wouldn't allow you to completely stock your tank with all the fish you are wanting at once

How heavily planted are we talking about? What types of plants are you talking planting?
 

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For the sake of discussion, lets say that the only bacteria in the tank is in the filter. So right now half the bioload is being processed by each filter. If you move one filter over, that filter will be able to process half of your current bioload, so that's the amount of fish you could add at once without initially overloading the system.
 

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In my opinion no it wouldn't allow you to completely stock your tank with all the fish you are wanting at once

How heavily planted are we talking about? What types of plants are you talking planting?
A bunch of crypts, jungle val, 2 anubias from established tank and floating wisteria.... So maybe just 10-12 serpaes then to start and then add slowly from their?
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Jaysee that simplifies it pretty good. Wasn't thinking of it that way.

Smit, I would think that you wouldn't have a problem adding the group of serpaes. Then watch and monitering the water. Floating plants always do best in new tanks as they are fast growers and take up ammonia faster. I would wait a couple of weeks after to add the next group of fish tho.
 

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Cloning tanks can be a bit tricky until you get a handle on it, takes a few times doing it. As jaysee stated, the filter will instantly cycle half the current bio load. This also means you took half the nitrifying bacteria from the established tank. Here's how you can deal with both the bacterial loss in the current tank, as well as the desired stocking on the new tank.

A mature colony of nitrifying bacteria is capable of doubling every 20 hours, I use 24 hours for ease of math. With the donor tank plan on some 50% water changes every other day for about a week, and feed lightly, same goes for the newly set up tank. Triple dose both tanks with Prime to deal with any ammo or nitrite issues, and carry on after the week of water fun. I'll get in hundreds of angels on a regular basis, taking a tank from 10 to 100 without a second thought. It just requires a really mature filter, a lot of water changes and Prime. As long as the bio filtration is well established it's pretty routine, just a matter of math & water.
 

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Discussion Starter #10
So even though the donor tank has 2 established filters on it I still have to worry, what about all my bacteria in sand and on plants, objects. I think my mature filter will be just fine.
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So even though the donor tank has 2 established filters on it I still have to worry, what about all my bacteria in sand and on plants, objects. I think my mature filter will be just fine.
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All the bacteria in the rest of the tank just means that the colonies living in the filters are weaker, so in practice moving one of the filters over to the new tank will not even be able to initially handle half the bioload of your current tank. I say initially because any deficit should be overcome in a weeks time.

When I take media from a filter, I increase my feedings for a week to build up the bacteria colony. After I take media from a tank, I fast the tank for a couple days to allow things to balance back out.
 
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Discussion Starter #12
All the bacteria in the rest of the tank just means that the colonies living in the filters are weaker, so in practice moving one of the filters over to the new tank will not even be able to initially handle half the bioload of your current tank. I say initially because any deficit should be overcome in a weeks time.

When I take media from a filter, I increase my feedings for a week to build up the bacteria colony. After I take media from a tank, I fast the tank for a couple days to allow things to balance back out.
Ok, I'm getting confused now. So you're saying if I move one of the mature filters to the new tank I'm going to screw up the old tank, even though I was I was only running 2 filters just in case one failed.

Keep in mind I have a lot of water sprite floating in the old tank.
 

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Yes, moving the filter over to the other tank will create a deficit in the donor tank. That deficit will be taken up though, as tolak mentioned. Ideally you would move over enough media to get the new tank started with one group of fish, like boredom mentioned, while only minimally impacting the donor tank, such that a couple days of Dosing with water conditioner will take care of it. That time it takes to make up the difference is called the lag time.

Your purpose for running two filters has no impact on the distribution of bacteria in the tank.
 

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Discussion Starter #14
Yes, moving the filter over to the other tank will create a deficit in the donor tank. That deficit will be taken up though, as tolak mentioned. Ideally you would move over enough media to get the new tank started with one group of fish, like boredom mentioned, while only minimally impacting the donor tank, such that a couple days of Dosing with water conditioner will take care of it. That time it takes to make up the difference is called the lag time.

Your purpose for running two filters has no impact on the distribution of bacteria in the tank.
A couple days? So maybe just do an extra water change during the week? I do 75% water changes weekly anyways, I could just do another one.
 

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If you were so inclined. As tolak mentioned you can just add conditioner for a couple of days, since the bacteria can double in size in a day - very slow by bacteria standards.
 

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The water changes & doubling of conditioner are more of a precautionary measure when dealing with a mature filter & cloning. Erring on the side of caution won't hurt, fish won't complain about fresh water.
 

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guppy cycling tank

hi guys im tr;ying to figure out how I can somewhat speed up the cycling process of a 10G tank that I hope to have somewhat heavily planted and have a guppy breeding project. I currently have a tank up and running for nnine months if I could use the filter from that tank and use the bacteria starter and put in the plants and put in some of the guppies lik or 3 or 4 thanks
 

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What's the make & model on the filter of the tank you have running, what size is the tank & what's the stocking? What's the make & model of the new tank's filter?
 
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