When you have a planted tank, can you do less frequent water changes? I ask because I used to do water changes weekly (about 20%) and now since I have plants in my tank (55 gallon, I have 1 amazon sword, 1 onion plant, 1 anubias and a bunch of water sprite floating on the top of the side of the tank whee the other plants aren't. It's been 3 weeks since I've done a water change. Ammonia is 0, Nitrite is 0, Nitrate is the same as it's always been, the second to lowest value (I don't know the exact number, but it's low), pH surprinsingly hasn't changed at all... Is there something else I should be concerned about? The plants are healthy and growing well (I took care of the problem with the onion plant I mentioned in one of my earlier posts, I just had to leave the bulb and most of the roots exposed). The water is crystal clear. Does having a planted tank really make it this much easier? I thought it would be harder, but it's been so great, and it looks great too! I just am in shock that my levels are what they are...