Hi all, I'm returning to hobby after a 5 year hiatus. I've been pretty amazed at the massive leaps the planted tank hobby made in terms of technology, products and equipment available. Also blown away by the quality of APSA members aquascaping skills and knowledge. The last great project I had was a 1.2m semi-Walstad style set-up http://www.apsa.co.za/xenforo/threads/1-2-semi-el-natural-update.2949/ which was mostly a success, but I did run into some anaerobic issues with the substrate after a year. For the next 2 projects I'll be testing out Dr Novak's concept of using a plenum to improve circulation through the substrate. Will also test out LED lighting and different substrate recipes. The slow process of planning, gathering equipment, sourcing plants and prep now begin!