I am thinking of putting a tank up in my kids' science class at school. Wasn't there an area on here with stuff available cheap/free for teaching purposes?

Aiming for around 20 gallon community/softie setup. Nothing too complicated. Thought maybe the kids could make some of the rock for the tank. What are your favorite rock recipes, and how long/how to cure?

The kids are going on a fantastic field trip to Port Aransas on Friday. I'm going, too! Sail on a boat, touch tank, jetties, UT marine biology. Fun fun! Thought this project would fit right in.

Ace, I know you set up tanks in your classroom on a regular basis. Can you tell me what you usually teach, etc?

FYI: I am in Elgin now (About 45 min NE of Austin). LOVING the country life!!!!

---Angela