RubenD wrote:
The tank will have about 300# LR with everything (corals, inverts, anemones)
because I will transfer everything from my actual tank.

Yeah, but that will displace water and be heavier than water. 125 gallons of
salt water weighs over half a ton. Now add in the weight of the stand, tank, and
equipment, and you're in the 1200 pound range before you put in the rock. A good
guess is 1300 to 1500 pounds, stand and all.

In the event the tank has a leak, is it fixable? How is that done?

Tristan's post is accurate. I've fixed leaks in glass tanks, but not acrylic.

George Patterson
If you torture the data long enough, eventually it will confess
to anything.