Hi so recently been adding a lot of pothos plants to my aquariums, in all my small tanks they simply sit in the filter or the roots hang in the tank. However for My 180 I wanted to do something nicer since the entire build has been pretty DIY/Cheap. So my idea is a Planter full of lava rock and have pothos plants growing inside, id have a small pump going from my sump into the planter and a return from the planter back into the tank. My Main Question is will this do a better/equal job of handling nitrates? I can obviously leave the plants in the sump and get the same effects but I have all the materials and want another project that isn't another tank any recommendations are appreciated.