agreed, you might as well just use a flashlight LOL, j/p but yeah, you need more light if u want more than 2 bowls dried when all is said and done. i used 18-20 42w(2700 lumens a piece) for 4 sq ft. thats 13,500 lumens a square foot, you should shoot for at least 8,000 per foot but i'd personally never go below 10,000 if possible.