as long as you keep the soil moist then you shouldn't have a problem, i knwo some people say to spray but i've had problems as well as others that i've heard from around here.
I give them 1.5 liters of good ph balanced water every three days, they suck it all in. I give them nutes every 2 week's, thats every fifth watering. Thats the way they like it, so i think thats the best way. No spraying (wont risk).


Plants look good though
Thanks the pic's are about 4 days ago, but i had some problems with my cam so i couldnt post any more, i think they look much better now after taking those fan leaves out of the way, secondaries just poped out, and the plant's look much bigger and better.