Nope, it's fine right here as its not pertaining to building the enclosure. It's also about both GTP's and Emerald's... that's three different specific forums, hence it fits perfectly in the General Discussion
That's 3(L)x2(W)x2(D). That however it the minimum, if you can afford the extra vertical space it is definitely appreciated
Emeralds average 5-6 feet, Basins however can attain lengths of up to 8'. GTP's average around 5'+ or so as well.