IMPORTANT NOTE: Mix method ratio has been updated since this video was published. Please follow mix ration in instructions on the back of every container which is 20 24 oz. of liquid to a five gallon bucket of stones (not filled to the top; fill bucket to 5 gallon mark a few inches from top of bucket). MAINTENANCE MAY BE REQUIRED AS OFTEN AS EVERY 1 2 YEARS. Please call if you have additional questions 4107214844 or visit our website www.celltekdirect.com