i have a ten gallon planted tank, there is 3 amozon swords all about 13" and a white sandria at about 7-8 inches, i also have a crypt at about 4 inches, i dont think that i can afford a flourescent yet, so i am running a small bulb with a 15 bulb is that ok or will i need to change it, i can up the light to a think 40w. i have the light on from 7am to 10pm, is that too much, or is that too little, what other plants would i be able to put in?