If you over watered them, then the leaves will yellow for awhile. Let the soil almost dry before you water them and get ANY kind of Ph meter and start ph'ing your water/soil/runoff and keep it stable. More problems are caused by over watering, overfeeding and NOT ph'ing the water you give these than any other things. (with the possible exception of spider mites) You can get a cheap ph/moisture/light meter at sLowes for $10. I use one and if you keep the probes clean, it's reasonable accurate. Eliminates over/under watering and ph problems, for sure. Don't guess, KNOW!

I just ck'd an experienced growers problem plants, and actually had to run through the Trouble-shooting form (a sticky at the start of this forum thread section) to find he wasn't cking soil Ph correctly and his ph was all the way down to 4.8 in some cases! Plants looked pretty weird, too. Even I was baffled, just looking at them. He's in the process of correcting it now...LOL!
TANKJR Reviewed by TANKJR on . Droopy #1, #2, & #3 Indoor grow in soil medium. Fox Farms Ocean Forest mixed with around 30% perlite. No fertilizers yet. Distilled water with neutral pH, watering every other day or whenever the top 2 inches of soil are dry. Germinated 15 days ago, planted in soil 12 days ago. Rating: 5