After 2 year of my tank being up and running I slowly did the bad thing and get lazy. I know this wasn't the smartest thing in the world. Well my tank ended up crashing. I decided to start from scratch. I cleaned the sump and tank and added new sand and rock. I re-did the plumbing and got the system up and running. No fish have been added as they are in the QT. My tank is cycled and now started testing the Mag, Cal, and Alk levels because I would like to have corals back in the tank at some point in the future. While I was testing I noticed that my Mag, Cal, and Alk levels are so low that they are unable to give a reading using my red sea test kits. I have tested multiple times of the day and multiple days. I want to raise my levels up, but my question is....if I have no fish or corals in the tank could I dose more than the 100ppm dose? or do I still have raise the levels slowly?