Hello - looking for assistance converting a 450Gal tub from chlorine to bromine. I have been unable to find sodium bromide up here in Canada to create the initial bromine bank. I do have bromine tablets, floater, and brominating granules (15% bromine / dichlor). What are my best options? I have read conflicting advice on crushing up tablets OR perhaps using the bromine tabs in a floater for a couple weeks while the bank slowly builds up. Looking for input. Thanks in advance.