[graveyardworm]

For the sand bed go with sugar fine or finer. The refugium mud is fine to use and will help establish nutrients in the sand bed for the seagrass. If you decide to use some sort of mud substrate put it in first then put in your aragonite to cover it. Then slowly add water to keep the sand storm down. I use a dinner plate set on the sand with a bowl on it fill the bowl slowly so it trickeles down onto the plate then onto the sand. Do this slowly and you will have virtually no sand storm. Take some sand or LR from your other display, and place it in the new tank to help seed the new sand bed. Research deep sand beds and check around with different vendore for sand bed recharge kits. Billsreef.com, IPSF both have good live sand to help charge up the sand bed critters. You will need a diverse bunch of critters to help keep the sand bed stirred. Stay away from sand bed seastars. Reasearch all the purchases for the sand bed, many are listed as good sand bed stirrers when in fact they are bad for the sand bed, and while they do move through the sand and stir it, at the same time they are feasting on your sand bed critters.