What kind of enclosure are you growing in? if its a full room then you should be ok as long as you keep it kind of small operation. but if your growing in a confined area you def will need some kind of constant air flow. the fan is good because it blows the leafs around which makes all the stems thicker. but it wont do too much for the heat if your just using a fan.

Heres a website of what you should look into.

Viagrow 100 CFM, 4" Filter/TD Series Fan COMBO - Style # OCC2600, grow room odor,grow room odor control,air purification,air purifiers,can filter,carbon filters,activated carbon filter

Basically it sucks all the hot air and any smell and eliminates them. The CFLs dont put off much heat but they take forever for your plants to grow. but if you ever upgrade to a Metal Hilide(MH) or High Pressure Sodium (HPS) lighting system you'll def want to look into a better ventilation system. me and Turbojoe are using a 4 inch inline fan connected to a big air scubber ( the big white thing next to the fan in the picture on the website) it keep our temp between 74-82 degree F and eliminates all smells.

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