Help me with my 500g aquarium stand

[toi_ss]

Hi, im building a 475 gallon/1800 litre aquarium in my garage (300x120x50cm)
what material would be appropriate for building a stand? Ive got 3 ideas so far, aluminium v slot, classic diy plywood stand or one made out of cinder blocks.
The aluminium is very expensive and i'm trying to save as much money as I can with this aquarium (I know, smaller=cheaper)
The plywood, i'm not sure I trust my woodworking skills and I don't a 2 tonne aquarium collapsing on my garage floor
The cinderblocks are cheap and very sturdy but I want to try to avoid using cement if possible
Any Ideas?

PS: instead of buying 1 large 3 meter pane of glass im going to buy 2 smaller ones and join them in the middle. What should I frame the tank with?

 

[magallonbuckinbulls]

T-slot rail is pricy, about 800 to 1200 depending on design.

2x4 construction w/ plywood cladding is less expensive and sturdy.

 

[toi_ss]

T-slot rail is pricy, about 800 to 1200 depending on design.

2x4 construction w/ plywood cladding is less expensive and sturdy.

I have decided to use mortared in place cinderblocks with a subfloor of 2x4s above it and then using 2 sheets of epoxy and polyurethane sealed plywood screwed down to that with decking boards screwed to the edges of the plywood. Means I can just slot the glass in and it will be pretty stable