head over to your local grocery store and buy Grandma's Molasses. its in the sugar section and it looks like a mini milk box. add a spoon to your water and stir. it helps in many ways for the plant roots and buds. theres not much you can do now except plump those buds up!! =)
as for the smell (if its a problem for you), get any bucket with a cap, drill a hole in the center of the cap, attach a fan blowing into it. inside the bucket, pour an entire bottle of febreeze in and then poke pencil sized holes around the top of the bucket just below the cap. plug in the fan and give it a few hours and ur whole place will smell like febreeze =) (use a mini pc-fan to prevent splashing lol)
good luck