Actually I was originally planning to do 30 deep (coincidence!), but with the external overflow, I don't want the tank to be too far out into the room.
I will be marking tape for dimensions on the wall/floor once we get into the house - then hopefully I can decide whether I want a length of 48/60 and depth of 24/22/30. I think having a visual of the outline in the space will help (I hope!)
Too many options.
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