my advice is to get rid of that heat lamp all together. the name of it pretty much tells you what its sole purpose is in life.. to create heat and not so much in the form of useable lumens in anykind of spectrum that is beneficial to growing mj.. heat is pretty much the enemy of growing mj indoors.. once you hit a certain point of temperature, mj growth pretty much slows to a crawl, unless your using co2, than mj can handle some more heat..
if your on a budget, i would just suggest going to your local home improvement store, and get as many of the biggest actual watt cfl bulbs in the 6500k range.. this is the correct spectrum for vegging your babies.. you can always add one or so of the lower k rated bulbs as well to mix up the spectrum, and once you get to flower, you will want to do the opposite, all 2700k ..
