[TjwBlake]

Originally Posted by MHG

Well slightly a different topic, but people keep saying more frequent of bigger water changes to help with the nutrients... what nutrients are they refering to when Ammonia, Nitrites, nitrates, phosphates are all at zero...?

Dont get me wrong I am not dismissing the value or bigger and more frequent water changes, I am just curious if I am missing something.

I think it's a 2 sided statement. Yes this is helping to remove trace nutrients from the system, sometimes they are in small enough amounts that they my not register on a test. But it is also about refreshing trace elements (calcium, iodine, mag, etc) all things that get used up by the coral growth. It is more about keeping everything fresh and clean