So I need to add some light for the macro but its in an acrylic sump and the sump is in an old wooden desk. So i would like to add lights that are not going to put off to much heat. Also its still a fairly small tank and i don't want to have water temperature issues. So two questions.
1. Are there any bulbs that you guys have used that are low heat? I know there are LED
options as well but i don't know much about them
2. How much wattage should i put in there to keep health growth and nutrient export from the cheato?