i tried and tried to find info on the web but could not, so here it is. i am doing a natural filter for an aquarium. it will be a tub 18" or so tall filled with cynder and or expanded clay pellets. there will be a leech style drip sytem a few inches under the surface and the bottom 6" or so will be filled with the top being wet/dry, meaning water will be continuously dripping through the middle layer and the top will be more or less dry. my question is what plants love a hydroponic environment like this, will use up as much of the available nutrients as possible, don't need to be fertilized,(which would kill fish) and will tolerate/maintain a pH between 6.5 and 7.5? the purpose of the filter is to keep nitrates, ammonia, nitrites, and phosphates as low as possible. i am thinking, cattails, water hyacinth, roses?, pothos(or is it a nitrogen fixer), or marijuana(unfortunately i live in the states though, so thats tentative). what does everyone think and what are you suggestions?
thank you.
thank you.
