i have 2 400w mh fixtures plus a T8 fixture over everything. i believe i have a 10k, 6500k mh bulbs and im not sure about the t8 bulbs .... they are the run of the mill lowes replacement bulbs for the fixture, for me i need the extra heat during the winter months, all my plants are in the basement and i dont want to use the forced hot air to warm the plants and dry them out... even during the summer months i like to have the heat from the fixtures because the basement still stays a bit cooler than the outside.
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