I wouldn't recommend spraying dish soap on them to be honest

Your water ph might be a little too out of wack but I think your soil has too many ferts in it man...I could be wrong though. Try a transplant into a simpler soil mixture with less additives
SunnyD Reviewed by SunnyD on . Yellowing of leaves, browning at tips E-indoor or outdoor In E-soil, soilless, coco, aero, or hydroponic Soil E-specific medium Vic's soil recipe in the FAQ:1 promix (3.8 cu ft) 8 cups Bone Meal - phosphorus source 4 cups Blood Meal - nitrogen source 1 1/3 cups Epsom salts - magnesium source 3-4 cups dolomite lime -calcium source & pH buffering 1 tsp fritted trace elements 4 cups kelp meal. 9kg (25 lbs) bag pure worm castings Rating: 5