After researching ways to get/make a decent size tank, it looks like plywood is going to be the easiest and cheapest way for me to get a bigger tank.
I have come up with this design, with a filter built into the side of the tank. I would use 3/4" marine grade ply for the inner surface and 10mm glass. In between the two sheets of ply I will put insulation (pink batts or similar) and use 3/8"-1/2" ply on the outside. Measurements are just estimates at this point, but its going to be 600L+
Would this work?
Have I missed anything out?
It will need waterproofing on the inside, what would be the best product(s) to use?