I realize this topic has been discused in the past and i have found really good info on iy but i have a question pertaining to my particular grow. growing ak47 in hydroton on ebba on flow tables. i am putting them into flower straight from well rooted cones. at harvest time they are only about 1 1/2 to 2 feet tall max. first six weeks are newt reg and the final 2 weeks are straight h20. my question is what ppm's should i start out with and progress to over the six weeks.