I am conflicted on the use of trace colors. I have used it in the past but have never been consistent with it so cant say if it made any kind of difference. I have a box on the shelf and was thinking about dosing it. Its pretty simple, according to BRS you dose based on calcium consumption which for me at the time comes to dosing .2 ml per day which I would probably just do 1ml weekly until my consumption starts to increase. Many say that trace elements are replenished during water changes but others seem to use them regularly. I had not planned on using them since I do weekly 5% water changes but I got to thinking. My weekly water changes are not enough to replenish alk and calc so why would it be enough to replenish trace elements? If I have to dose Alkalinity and Calcium on top of water changes to keep up with demand would it not be the same for trace elements? My only concern is that I cant test levels and have no intention of buying separate test kits to test. Thoughts?