it is the best way to grow, and the yields are off the charts. plus you grow new strains all the time cause there are breeding tricks you can do in this system, i pop them under 12/12 with fluorescent lighting and then when they about 1 to 2 feet and sexed i move them to the 12/12 epaps so i get even more then 7 times a year cause i am total perpetual and the e paps put out 1200 , you never need blue lighting in this type of system the de bulbs but out so much spectrum and intensity your plants can get very big and in a sea of green i have got over 1/4 pound of bud per plant on some strains yes in a 4x4 area . lighting , air flow and water tech are key. tap water works great too use a powder ph down to lower if you need to lower as it breaks the chloramine [ammonia] out and leaves the chlorine witch plants need for cell division. i have yeilded many times 16 pounds under 3 lights yep for sure i know only 2 other growers that get close to that, [BIOGANJANEERING] LMAO. stick to the basics and grow in soil , useing drain to waste set up. you use a lot less water then the internet says and blow away hydro growers all day every day and 1/2 the nutes too, just put in earth worms, they do all the work, also speescees is a really cool dude and what i consider is one of the top 5 growers in the world, i also being one of them, i learned the 12/12 system by accident in 1982 cause i was playing around with my street lamp grow system it wasn't till years latter that heard about another grower doing it, [speecees] cause every one i knew thought i was lying about it, exaggerating it, lmao so what i been growing 44 years now and can count on one hand the real master growers i know [ BIOGANJANEER ] YEP WHEN YOU REALLY LOVE THE PLANT AND REALLY PAY ATTENTION TO IT THE PLANT TEACHES YOU. there are many good growers out there, but when it comes to betting, ill bet my crop against any grower and ill out produce them, get better potency,yield and tastier shit all day, i have given average samples to friends at some of the top labs and my stuff blows away the highest recorded tests, i dont pay for the tests so they dont get published [dont need a target on my back lol] but all the cup winners, i have blown that shit away. and those who took the bet lost lmao and i let them keep their crop. most are doing my style now some are just hard headed and tweek with their grow too much, this shit is easy really , just dont be in a hurry and give them what they need, i variate the lighting and also the environment to simulate as best i can out doors. there are some things other growers would have a heart attack doing what i do they just dont know [limited mind set]. have fun with 12/12 once you got it down you will never change, i only clone special girls till i find a power male to breed with, yep i grow a lot of males looking for super man plants. and the male flower, has some really good canebs females dont have, and bees like male plants better then female plants, i study the plants every closely very very closely and select the best, i also grow in a green house where i breed at under extreme conditions looking for the strongest and best plants to grow, picking the structure and pheno of the strains i do and work with. have fun. c ya