[graveyardworm]

Since you added mud to the sand bed the wait wont need to be long. I waited 6 months with my seagrass tank, but I didnt add any mud so I waited for the fish poo and stuff to build up a bit. 150 watts MH will be more than enough, but I think you'll be more pleased with a 10k bulb, and the growth will be fine. Purchasing the grasses in December will be fine provided you can find a supplier willing to ship, some wont. Are you planning on any other livestock? Consider a small pile of LR rubble as opposed to a 2 or 3 larger rocks. It'll create more living space for the pods and stuff.

Keep the pics coming, cant wait to watch it progress.