65w

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    Light on a PC grow box

    Hello, I have few question about light on a pc grow box I want to prepare, How many watt is too much? I want to buy 65w CFL with cold spectrum for veg and to switch it to 65W CFL with hot spectrum for flowering Is it enough, or maybe too much? these CFL are a little bit bigger from a...
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    CFL bulb question!

    So I am looking at this 65W(250W equiv) 4000 lumens, and was wondering if 4 of them would be too much for a 8.1" wide x 26.5" H x 18.6" D Would it be too much heat? I know that CFLs don't give off heat, due to you being able to hold them in your hand, and this would be used instead of 23W...