This is what i did to make a 80w light set up for a 40g planted tank.
1-48"shop light with plug $18.00
2-48" gro-lux bulbs $6.00 each
1-10 foot .5" diameter copper pipe cut in half $5.50
2-4 foot .5" diameter copper pipe 1 cut in half $3.50
2-90* elbows $1.00
2-t-joints $1.00
1-bag zip ties $2.00
1-pipe cutter $ 5.50
Take all pieces put together as per illustration use zip ties to secure legs to stand if you have a woden stand you could mount with something diferent
total cost under $60 canadian

AWSOME !! great job!:)

Are the lights you use for your house exactly the same with the ones you use for aquariums?

The light fixture you can use for both, yes, but the bulbs should be some sort of aquarium bulbs, depending on what you wonna achive. With a planted tank, you can get Nutragrow or any growing light that has 2-3 wattage per gl of water, for the sheer fun of just having brightly looking fish and plants, something like a color bulb is fine (arctinic blue or pink, for example). Or you just want your fish to have light, well, then, nnnnnn sells aquarium bulbs for that kind of fixture for 5 bucks each....