After reading a million posts about test kits on the main RC forum I decided I would ask the local people what you use to test your water parameters? I am currently using the API Master SW and Master Reef Kits but they are running out because I test so much. The main tests I am looking to get are Ca, Alk, and PO4 so what do you use for those parameters? Ph as well. I was looking into a probe type Ph meter so if you have a recommendation for that as well I would really appreciate it! Thanks and happy reefing!!