I am using Black Magic Research Grade. Thank you for the thought on carbon.
Have you gone through Paletta's book, and read what some people do, or don't do- and they are successful! (I, however, am not) Thales-the salt mix is a good idea, although I've had recession in the past, right now it seems to be escalating. when I did the past 2 water changes, the alk. in the tank rose higher than usual- even though it didn't read that way in the make-up batch. I always check Ph, alk, ca, and temp. and correct accordingly before adding. I will check through my log, hopefully in the morning. I am getting ready to leave in the a.m. for IMAC in Chicago- a day early for the behind the scenes tour of the Shedd Aquarium. I signed up too late last yr. , and missed the tour, but did visit Shedd anyway. I live in Fl- and have visited many aquariums- SeaWorld, Atlanta, Monterrey Bay- and Shedd beats the, all. If anyone sees any speakers on the list that I should pick their brains on- let me know please. I will have my lap top with me. I appreciate everyone's constructive help! Dawn