Planted Tank Guru
Join Date: Jan 2010
Location: Contra Costa CA
I put it in the tank dry, then rinsed it in the tank.
Twice filling the tank less than halfway, and deliberately stirring up the STS to make as much mess as possible. Empty by placing the siphon at the very bottom of the tank, moving away the substrate from a corner to make room for the siphon.
On the final refill I put the STS bag (empty) in the tank and refilled by slowly running the water in over the bag.
It was slightly hazy, but I would have added the fish if the filters had been cycled.
I started the fishless cycle, and a day later the water was almost perfectly clear.
When I rearranged the rocks, making quite a mess, it settled very fast, and was again clear by the next day.