I concur with the heat and the pH issue... Foxfarm OC is Hot by itself... Next time try the Light Warrior for the seedlings, and definately use a 3:1 OCerlite ratio to help with proper Aeration... Let your plants search for and want water a little bit, it does sound like you are overwatering a bit as well... follow the advice that you were previously given for reducing the pH, water less, add perlite when you transplant, and chill....