m.grow or urine if you dont want to buy any real stuff from a hydro shop. but ive found that m.grow patio or urine do just fine. the urine sounds stupid but it works i started with 1 part u. and 20 water then started adding a v.little more u. as it grew.but that was an experement cos i read it worked on this site and it did no burning or anything to the plants.they grew just fine. but now im just using m.grow on one grow and buzz on another and there is hardly and difference,in growth size, also a little bloodmeal in the soil. just keep testing the p.h of your soil and if its normal then you should be ok. keep trying and if it works then keep doing it.