Looking at the Salifert test kits, it seems I have to order each kit separately. So I need PH, Ammonia, Nitrates, Nitrites, Phosphates, Alkalinity and what else?? Don't they have any combination kits? I want to order the Coralife Skimmer also, but I see they are out of stock right now. Also, I need to get some carbon filters for my Fluval. The closest saltwater fish store is about 35 miles from me so it may be a few days before I can get these. I think I will continue to use my IO salt at least until I use it all. It seems that some people do like it. Am I on the right track so far? I will be posting everything I do. Thanks.