So I am intending to heavily plant but not co2 my new 50gal tank. The footprint is 80cm long and 40cm deep (60cm tall). My two questions are wether my plant choices are ok and about the substrate. 1. I plan to base the tank with this, would this be a good base for the plants and what weight of pool filter sand will I need to get the right depth of substrate flat across that footprint? It all comes in 25kg bags and that seems excessive: 2. I plan to have a line of Vallis at the back to grow upwards and into a sort of curtain for my angels and gourami to swim in and out of. At the middle depth some driftwood with anubias nana in the crevices, maybe a small amount of java fern. And st the foreground my amazon swords. I've seen some swords grow directly up but I have mine already growing in my 20 gal and they are spreading out with more leaves far more than they are going up, and have stayed quite low. Would all these plants be ok in a tank without co2 and what do you think of the scaping plan? Thanks guys!