I know I had a thread laying around somewhere for a 55 Gallon, but my plans since then have changed. I am currently working on an offer I saw online for a 75 Gallon Tank + Stand for 35 dollars, so of course I'm jumping right on that. It's not final, and I may be wasting my breath, but I sure do hope I can get it!

The 55 however, I do still have! I am giving it to my cousin who also owns crabs! I am taking it over tomorrow, and we are picking up things to start his setup! So pictures will come with that process!
Now I have a few questions regarding sand. For the 55, especially since we are picking it up tomorrow, how much sand will we need? I'm thinking, after hearing some numbers, we'll pick up 200 pounds? I want him to have about 12" of sub, as he has a very large crab. We have the EE covered. For an Ultratherm, a 6 x 48? Their upstairs usually runs at 69-70 degrees, do I don't know if that has any affect.
I have the same questions regarding my 75. I want 12" of sub, so 250 pounds? 300? I am really not good at figuring these numbers. Also repeating the Ultratherm question, a 6 x 48"?
Thanks everyone! (pictures to come!)