I have been using a Kent Turbo Calcium along with super buffer dkh and recently tried using Kent Marine's two part alk and CA buffer. With either of these calcium and alkalinity supplements. I still cannont consistantly get my Calcium levels past aroudn 350 however. I am thinking of switching to a calcium reactor and am wondering what is a good cheaper reactor for me to go with. Any tips on setting it up and the effects it will have on my system will be great as well! Thanks