Doing super frequent water changes.. what can go wrong?

[Delphinus]

Sorry Steve, I missed that you were only talking of nutrients. Somewhere on the first page Kien mentioned in passing that (to paraphrase a bit because I'm too lazy to go find it and quote it) that it would be nice if this could also eliminate the need for additives. Which I took to mean the big 3 (Ca/Alk/Mg). I wasn't sure if you were addressing that, or the nutrient thing. So I guess I'm in total agreement with ya, you were just better with the graphs and math and stuff.