Update:
Ended up using a different tank, mainly because the 1ft cube would need some modification to fit the canister, and i figured its easier and quicker to just pull the other tank. I'm over waiting to get this rolling!
So tank has had substrate added and some hardscape, i will have to give the wood a few hours to re-waterlog (i pulled em from the 4ft yesterday arvo, and due to hot weather here they dried a bit more than i wanted, so floating a little bit). Once the wood can be placed properly, the planting will begin.
Flourite looks great, but even very slow and careful filling, it clouds the tanks up bad, so little canister is running and will see how it does!