Cfls are efficient so they don't put out a lot of heat. But honestly, if you're looking for a "forest" like tank and you want good carpeting you should look into t5 ho
lights. They're affordable, low heat as well, only downside is you have to replace the bulbs every year. You can still grow great plants with the cfls but you have to pick your plants carefully.
The fixture you got now, you can hook up a pc
fan to a dc
adapter and it will help out a lot with sucking the hot air out.
But what else do you plan on doing? Substrate, ferts, co2