Combining three tanks into one - The Planted Tank Forum
 
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post #1 of 3 (permalink) Old 01-15-2009, 06:35 PM Thread Starter
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Combining three tanks into one

I'm soon to combine my planted 10, 20 & 29. gallon tanks to my new 65 gallon tank.
My concern is that I will have to make the switch all at once because the new tank is going in the same place as the 29 gallon tank. I'm going to make the move without cycling the new tank. I plan on transferring all gravel, rocks, plants and filters to the new tank (fish also).
So the question is how much, if any, of a cycle will I have?
I also started a new canister filter that I'm running in the 29 gallon tank to pre-seed it for the transfer.
When I make this switch (in a couple of weeks) the new tank will have 5 "seasoned" filters running (till all is alright) and about 50% used tank water. I obviously will check all water parameters frequently.
Can anyone comment on the chances of success with this type of endeavor?
Thanks for any tips or ideas!

Tony

Tony
Six Planted Tanks: 55g 40g 29g 20g 14g 10g.
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post #2 of 3 (permalink) Old 01-15-2009, 06:53 PM
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With all those filters it shouldn't be a problem. In a couple of weeks the canister should have enough bacteria to sustain all the fish.
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post #3 of 3 (permalink) Old 01-15-2009, 07:22 PM
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Used tank water isn't important. When we do big water changes we introduce new tap water in our tanks, and it works fine. The substrate in the new tank should go on top of a layer of mulm from existing tanks. That jump starts the bacteria in the substrate. Given that you are combining 3 tanks, you could put uncleaned substrate from one of the tanks as the lower layer in the new tank. That really does jump start it.

The plants and rocks will be covered with bacteria, so that gives you the primary start for the water in the new tank. Adding to that, the pre-cycled filter or filters, and I don't see you having any cycle occurring at all in the new tank.

I switched from a 29 gallon to a 45 gallon tank a couple of years ago, doing much as you are, and had no fish problems at all, so I know this works well.

Hoppy
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