We bought a South Seas Spa 744L in October. When getting it delivered, they went over maintanece with my husband--simply saying, rinse filter weekly, change Nature 2 every 4 months, add chlorine granules after every use(about a capful)--when we run out of this-start using renew(again, capful per person/use), and put enzyme in it weekly. I've been doing all that, but the 2 days(not consequtive) we didn't use the spa-no chemicals were added--the first time, water got cloudy-the 2nd time(2 days ago), kinda cloudy w/an odor. I used the chlorine granules(bought more) and shocked it, now it's slightly cloudy-odor's gone. I am thinking all is not right only doing these things. I've read nitro's guide--but I am a dummy and like to be told specific amounts. I was debating about doing the 5 oz chlorox 6% per person/hour and then doing the dichlor and renew treatment weekly. Right now, I only have test strips. With the nature 2, if we use renew-which is non-chlorine, the strip won't read any chlorine, right? Any help or advice is welcome...just do it in layman's terms so I can understand. Thanks in advance.