i have finished making the stand that will hold my 2000x450x450 tank, the tank is 400L nett.
the frame that the tank will sit on is made with particle board on 70x45 framing, the legs & diagonal bracing are 70x35 & the lower horizontal parts are 70x45. I have used these sized parts as that is what i had lying around, if i had to purchase all of the timber i would have made the legs 70x45. I have liquid nailed & screwed all timber joins, the legs have been screwed to the upper frame with 10G 100mm screws & the bracing to legs have been screwed with 10G x 75mm screws.
I will clad the stand with plywood panels & doors & make a ply hood but at this stage it is to get my trophs into their new larger home so that is the priority. I will also add a panel on top of the lower bracing to create a shelf. If i had to buy the all of the timber, screws & glue i would estimate it would cost approximately $110 all up.
this pic was taken before i added the front to back bracing