and Dawn Haze
: The main rack is from Home Depot and is stainless steel. Wass, It probably is like the one in your garage, but these are the 36" instead of the more common 48".
FYI, Dawn Haze, the 48" won't work for 55g I don't think. The corners protrude a bit more - I couldn't get 30L on mine, which are 36". If you could get one with more depth than 12", it would work. Also, the weight of a 55g is likely too much - you'd want it rated at >500lb. more like 750lb.
Each shelf on the 36" is rated up to 350lbs., evenly distributed. The tanks are 20L with the weight evenly distributed across all the support bars. I had a 20T on there for awhile, and there was significant bowing in the center. There is no bowing at all with the 20Longs. There are 2"x4"s under the posts to distribute the weight more evenly across the floor. The rack is attached to the wall with a set of 4 U braces and 8 screws. All electrics feed to a GFCI off to the right.
The tank on the left is 10g AGA on an old microwave stand made of the same stainless steel material.
Total Tankage is 70g. Oh, and the CO2 manifold feeds a line that snakes through the wall to my 30g in the living room.