Hi all, So my 20 gallon tank has been running for over a year now, and I have slowly gotten it to the point where it is quite heavily planted (tons of growth, green all over). Actually at this point I have (I am embarassed to say) not done a water change in this tank in about a month, due to being extremely busy with a new job and taking an online course. I checked the nitrates today and the levels are lower than I've ever seen them, almost negligible. I also overfilter this tank, I am running an Aquaclear 30 and an Aquaclear mini, where the mini itself could probably handle the filtration on its own. Is it possible that the amount of plants combined with the filtration has gotten it to the point where water changes would be almost unnecessary in this tank?