Han looks great so far, I'm happy for you.
Those steel racks? From HomeDepot? I have the one from there that has the 2'x4' shelves. I'm using it for my Aquaponic rack. My 40gl tank was going to be over the load rating so I replaced the particle board shelves with 3/4" plywood. I also used bricks under the middle( the 40 is on the louvers shelf.
Definitely, test fill you tanks to see how the shelves take the weight. Also wet particle board degrades very fast. If your going to use it get some kind of water barrier on it.
yes i got them from home depot
72" H x 48"W x 24"D
and i spilt them in half as I cant reach the top of the tanks if i had it all up.
they rated the whole unit to hold 4000lbs
so it should be 800lb per shelf.
but i'm going test fill that one tank first.
And yes i have a thick black vinly under each of them tanks.
Also since I only used 4 shelves out of the 5, I double stacked the top shelves with two boards each.
If the boards flex to much i'll get some plywood.
I might have to double stock the 40b two on each rack to fit the rest of my tanks in the room though.
either way i'll test fill the first 40b and see how it holds.