I recently acquired a 75 gallon tank and decided to plant it and eventually move my discus into it. However, I tested the nitrate levels and I'm close to 50-60ppm. Will the plants eventually lower the nitrate level or do I need to lower it myself via water changes or some chemicals? I was able to use some substrate and gravel already in the tank that was grossly neglected for some time. I have vaccuumed the gravel several times and done 3 50% water changes before planting. I also added discus buffer to lower the pH and some "florapride" fertilizer. Other than that just tap water conditioner and co2 recipe in the bottle (the nutrafin/hagen stuff). This is fairly new to me, I have done some research but the nitrate/nitrite cycle with plants is a little hard to figure out. Little help please!