Like Aaron I keep a heater, and powerhead in it, and a cover on top. no light. it is a Rubbermaid comercial products. it hase brute lid stamped ontop. standard garbage can size 30-40 gallon. it was bought at home depot. now i forgot to mention that i noticed the algea after i was to lazy to do a water change sunday before last and it sat in the can mixing for like a week and a 1/2. maybe the extended period of time was an issue. after i do water changes i gennerally just rinse the container with HOT tap water. scrubbibg it just every once in awhile.