so i was just given these 2 like 18 inch tall Gunks. There are some yellow and dying leaves but most of the leaves look really healthy. i need to go tomorrow and get soil and fertilizer, what should i get? also what light schedule should i use? any advice on pruning, i'm not ready to flower them yet but i have these in a 28 inch tall box and haven't built my flowering box yet. how long can i wait? oh and what should my watering schedule be? how much water?