Gummys First Coco

If someone could give me some advice as to what they think my issue is, that would be great. I believe my problems started as seedlings: I overwatered them. Growth seems to have slowed. I layered hydroton on top and bottoms of the pots to help drainage and water dispersing. I believe they are just ever so slightly overfed w/ nutes, I can see Nitrogen toxicity in the LSD-25. My main issue however is the drooping of all the plants. I started by watering them until runoff, but they would stay wet for up to five days or so. I've started to water about 1/10-1/20th of pot size. so about .2 gallons. I try to use plain pH'd water (with Mammoth) every third watering or so. Any help would be great. Don't have pics for previous weeks, but they were planted on November 2nd. So it's half through week 3.