Hey!! I also came here from RIU. Im JimiHendrix42 over there. Been growing since they came out with HID in 77-78. Grew my first plant in 1972.
I also use the Hydro Gardens 4-20-39 x 15.5-0-0 formula + Epsom Salts. Might add MPK in early bloom for 2 weeks.
I use Promix BX as my medium. Lights are 1x 1000w Hortilux HPS, 1150w Gavita DE x 2, and have a 14 x 4 grow area. I usually grow big plants in 20 gallon containers, and then slip in some 5 gallon containers in the empty spots. I dont top, I bend my plants over from an early age. I also veg with a 1000w Hortilux HPS, and a Gavita 1700e. I also start seedlings under these lights. I do a 24/7 light scheme. Every 4 days I turn the lights out for 6 hours. I start seedlings in 32oz Uline Deli containers.
Ive also been know to do organic, and I like Peruvian Sea Bird Guano. Both Nitrogen formula, and Phosphorus formula. I also use Kelp, Azomite, Calcitic, and Dolimitic Lime. I use 2/3 Calcitic to 1/3 parts Dolomitic. Promix BX for medium