i have been growing this plant for about a month and some change i been giving it nutrients at quater strength every other feeding with maxi grow hydrolonics and watering it pretty reguraly with a ph balance water at about 5.7 its in a rockwool medium under 24 hr 600 hps light and today i found a leaf with a yellow tip with black spots and also my leaves seem to be curling up. i thought it may have been bleaching because i did have the light a lil too close for about a whole day i moved the plant away also a few of the lower leaves had some yellow spots that were magnesium defieciency and seem to be under control now. i been flushing for about 2 days now with str8 distilled water that is ph 5.7 so i dont really kow wat to do next. some one help me this is my first grow so any advice at all will help big time thanks grasscity!
why are you using a hps bulb. you really dont need that much until flowering. you should start out with daylight cfl bulbs. you really dont need that bulb until flowering. i dont know much about hydro. but i would read the lighting section. your just wasting more energy by using the hps all the time.
i jus started the nutes like a week ago and was planning on getting to that point by next week or so by gradually increasing the dosage.
A seedling can take 1/4 strength nutrients at 2 weeks in hydro, and by 4 weeks will be at full strength. With that 600 watter, it can use more nutrients, with the amount of lumens. Thats why its not growing.