bradac56

You do not need laterite with the castings if you don't want to use it.

You can use the castings just like sphagnum peat moss just dust it on the bottom of the tank along with potash and Iron Chelate tho I've always preferred peat to castings it's probably a bit better in organic compounds depending on where you get it.

All of that stuff can be found at a local landscaping or orchard supply store.

- Brad