Tank still going strong about 10 months after setup. Very little maintenance other than clipping the ferns,thinning out the blyxa and refreshing the sand so tank has lived up to it's promise of being low maintenance. One curious think is that I'm starting to see a slight dusting of brown particles on the plants. I'm not sure if it's diatoms or the breakdown from long-term use of Aquasoil II. I'm leaning toward the former but curious if anyone else has experienced this.