Hi guys ive been growin over 15 years now but new to rollitup. I first started expanded clay but when coco came on the market ive never looked back to those old days using expanded clay {Hydroton} For those who use it still i highly recommend switching to it. No pumps , no res, just watering every 3 days for the whole cycle . No pump failers , not ph probs, no deficiencys , no disease, and better quality, better taste, and better yeild due to no stress to the plants . Just a bit of perlite on the bottom of your pot sox and a 10% mix of perlite to coco. Only one lot of nutrients to mix. No grow no flower nutes just coco a+b . No need for expensive additives or such. all you need is about $40 worth of nutes for the whole grow / flower process. OH AND A MUST ::::::: RUN TO WASTE you wont belive the results. Any questions , ideas , Tips just ask