Please help me decide

[mcordelia]

If you put in an opaque divider, you can have two in 35 gallons footprint of the tank matters in that configuration though, if it's tall and narrow that might not work as well.

 

[Martin trj]

If you put in an opaque divider, you can have two in 35 gallons footprint of the tank matters in that configuration though, if it's tall and narrow that might not work as well.

It is a tall tank.