im not even going in to the to hot shit again,look it soil feed at 6.5,happy or ocean dont feed anything other than water for at least 3 weeks,at 3 weeks start 1/4 strength feed and work your way up ,when you get just a tad tip burn you back off just a little,look up cannibis hannah feed chart on goggle,it will tell you what ppm and ec to use for stages of growth,if you want to get a feed started at least a week before you flip so the plant doesnt stress when you start the stretch ,far as the perlite fad going on ,remember this the more you throw in the soil the more you have to feed point blank how it is,i dont recomend any perlite using the bag soil,there is no absolute benifit from it other than feeding all the time ,new growers read add more ,well add more if you like ,this is all you ,but new growers dont need the extra headache and what becomes of it is over and under watering,soil come in the bag with less because that is how it made and works,when it give you problem from just the bag soil is when you water all the time,even with extra perlite it still gonna happen from to much,lean your pots instead,you will get to a point were you know exactly when to water just looking at it,first time will be serious droop the next time it happens you will know before hand to water just before it does if you dig,anyway your call but for sure give that ph of feeds going in at 6.5 for soil