Sorry for the delayed response I have family in town and been constantly on the move.
This is bulb I am using. GU10 20 LED WHITE Light Bulb Lamp 110v DIMMABLE 10 OFF | eBay
I do not have plans for plants just yet. I may put some moss or something but other than that no plans for plants. It is a freshwater tank Tanganyikans. I am not sure on the depth of tank, I will measure later and get back to you.
They give off no heat at all... I ran them all day on a dry tank with no noticeable change in temperature.