The friendliest place on the web for anyone with an interest in aquariums or fish keeping!
If you have answers, please help by responding to the unanswered posts.
Some timers will not work on lights that have a ballast like Fluorescent types. You will need one that makes a mechanical connection or has a relay inside.
I just use a 4 dollar one from Walmart. Took me a minute to figure how to set it up right. Now that I do it works great. Have it set from 7am to 10pm. And so far 3 weeks in it has worked well.