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Old 03-27-2011, 12:41 PM   #1 
NIB BETTA
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Need advice on growout tank size.

I have approximately 70 80 fry in a 20 gallon long tank. They will be seven weeks old on Tuesday. I really feel that this tank is too small for all of them and I have witnessed a few fights this past week. I have a 55 gallon long tank that is currently divided. I am seriously considering breaking this down and placing the fry in there. Do you think this tank is too large for seven week old fry?



My other option is to purchase a 33 gallon long tank which is four feet long. What are your thoughts and experiences?
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Old 03-27-2011, 12:51 PM   #2 
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It's up to you. Either one should be fine. If you think the 55 would be too big you can always divide it in half or a quarter or what have you.
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Old 03-27-2011, 02:04 PM   #3 
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What do you think the minimum size tank should be for this size spawn?
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Old 03-27-2011, 03:57 PM   #4 
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They're 7 weeks old? It seems to me your going to start jarring pretty soon but even still I think the 55 is your better bet because the more room those guys have to grow the quicker they'll grow. As long as you don't mind changing that much water that is, LOL

Edit..

Another option would be to divide the spawn into the 20 and 33 gallon tanks. This is what I'll be doing with my spawns if they turn out big because I can't fit my 55 gallon yet.

That would also be good because in case one tank gets a disease the other can be safe. You can also use it as a way of distinguishing the good fry from the really nice fry, etc.

Last edited by 1fish2fish; 03-27-2011 at 03:59 PM.
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Old 03-27-2011, 04:12 PM   #5 
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IME, a 20 long is fine to grow out up to 100 fry. As you gradually start to seperate the aggressive males into individual homes,the tank will become less populated. Do you have live plants to provide hiding places and break up their line of vision?

Of course you could always move them to a 55 gallon if you want. Are there any inhabitants on the other side of the divided 55 gallon tank? I think they use 100 gallon growout ponds on fish farms in Thailand...if that helps.
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Old 03-27-2011, 05:13 PM   #6 
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Excellent points. I have decided to take my females out of their tank and place them in the divided 55 gallon. And split the fry in two 20 gallon long tanks. This will solve two problems, because my females will not stop fighting. Each time I remove one, they start trying to establish dominance again.

So this will be their new home in an hour or so.
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