I was reading the article on this method of tanking care of your tank (on this site) and I saw that they still recommend you do 25% water changes once a month...isn't this sort of going against the "natural" aspect of the method since the LR is doing most of the work anyways? Also, I was under the impression that you just needed to add new freshwater to make up for evaporation with SW tanks. Am I way off here?