Sticky wasup man. I have had trouble with watering myself about to invest in that watering pen soon. But the best way to tell is feel how heavy the pot is without water then water it feel that weight then when once it is light again water or you can water after the first two inches of soil are dry as dirty desert dirt then give her a drink this is just what i have read. Check out my latest pics on my log in my sig and you can see some overwatering problems.