I've had these leos for years and I know them quite well. They were miserable in there 20 gallons so I moved them to 40 gallon and what a difference. They went on a hungry strike until I moved them and wouldn't even let me pick them up. 24hrs after moving into the 40 they were back to normal. I've tried down grading do to the fact that 2 40 gallons take up quite a bit of room and they were miserable again, not eating and no handling so I moved then back and sure enough 24hrs later back to normal. The 40 gal is 36 long 18 wide and each side of the t8 will be 24x24 but I think the added width will make up for the length decrease so they will still be happy I hope. Worse comes to worse if they don't like it then I don't have buy another t8 when my killer bee grows up. But if they do like it I will be buying another in the future to stack right on top of the other. It will actually save me space in my house lol
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