im not a veteran but ive been growing for about a year and i personally think you might not be watering enough. I wouldn't want to be spending that much of my time watering my plants (2 times a day) i usually water until i get a little runoff but then again it could depend on how much perlite you use i guess because i usually use about 1/3 perlite so i get runoff quite quickly. But if you are getting good results why change what you are doing right?