Thats basically it, the first packet I put in didn't do so well but since then its going great. I think it was becase there wasn't enough algae yet, now there is alot. I tried to take pics but they really didn't come out well. Good food source for fresh and marine in fact my wife's FW tank is one of the reasons I started it, as long as you remember they are not that nutritious so you shouldn't be feeding brine only.