coco hydro auto pk dtw hydroton

hi everone just wanted to show you my current grow. im in a 4x4x8 tent with 600w MH light. 100L resivoir and flood table set up for drain to waiste. i use a 400 gph pump and feed 4x a day 5 minutes per feed in four 7gal smart pots in canna coco with a current ppm of 660 using GH nutes and heads...