The standard two pin bulbs that most aquarium hoods are sold with...yes, they are all inter-changeable...I have regular aquarium hoods on all my tanks...I just don't buy aquarium bulbs for them...lol....it seems if it has aquarium written on it...it will cost 3 times more....lol....I am on a budget...so I buy and use a lot of non-aquarium things and still get the same results....the lights I use over my 55g and 75g only cost $10.00...shop lights from walmart or home depot......holds two bulbs they cost $10.00 for two...works perfect.....and you can even paint the shop light to blend in or match your color scheme....or even build a canopy.......
Start out with a small tank and a few plants and propagate them and start setting up more tanks as you go...that what I did....lol....I only spent a total of $40.00 on plants and now have 13 tanks packed full and twice a year I take a mass amount of plants, fish, inverts to market to pay for my hobby....keeps me busy...laffs.......but its fun......