im a uk grower. i have 1 of these http://www.growell.co.uk/p/5115/Oxy-Pot-1-Pot-Kit.html they are so easy to use and i have not been growing long, look at my journal on page 2 https://www.rollitup.org/grow-journals/171975-big-budha-cheese-soil-dwc-2.html its on 3rd week of flower and its...