Put this together yesterday afternoon in a SuperFish 30cm cube I had knocking around the garage. It might change, I won't be planting it for a few days yet. Not sure if it's wholly appropriate to post this in journals 'cause I'm not sure if it's going to turn out to be much of a keeper, but hey it'll tide me over till I decide what I'm going to do next... There's a layer of soil under the sand, a 1:1 mix of peat and ericaceous compost. I'll be tearing down Windswept Eternity and transferring the CO2, so it'll be an injected soil tank. Not sure which plants I'm going to use, or for that matter where I'm going to put them - the hardscape is a bit overwhelming - but I'll probably reuse some from Windswept.