I'm starting to put together a 150 gallon tank that has been sitting in my garage for a few years. The tank will be medium light level and I will follow EI dosing (this has worked well for me in the past). I've only ever used cheap coarse sand or gravel that is sold as road sand in Alaska (getting enough fancy substrate to AK would just cost was too much $$$). I want to make sure I do the right thing in this tank substrate wise and have been reading about materials that conduct nutrients better than gravel. One such product that I can get locally is Turface in the natural color. I ran a trial, it washed up pretty easy and didn't make a huge mess. However, it is really light and I think you might vacuum it up trying to do any gravel vac work in the tank. I know I can make it work, but it using a higher CEC material over a small bed of peat going to be much better for my plants in the long run over a gravel bed? Will capping the Turface with gavel be a decent compromise to allowing nutrient transmission to the plant roots while allowing the Turface to not get blown around the tank?