I bought several different Red Sea test kits for the tank I'm setting up, but I accidentally ordered the refill kits instead of the full kits. The only thing I don't have is the syringe holder for the Ca, Mag, and Alk kits. Does anyone know where or how I can get on of them? See picture for what I'm talking about. I would just order a full kit, but I'm a little concerned that some of the stuff will expire/go bad before I can use it all. Thanks