Recent content by bink

What's the difference between T8 and T5? If I want to switch from T8 to T5, does that mean a new hood?

I have a 20 gallon long tank that I'm hoping to plant soon. It's cycled and has been running well for a few months. I looked at the light today and noticed that it's only a 17w flourescent. I have no idea if it can hold a much more powerful light, but I do know that I want very easy plants that...