Notice in OCH's forums that "Danger Den" and "Swiftech" are blocked out, they appear as ##### ### and ########. The only reason they do this is because danger den and swiftech are some of their main competitors. If their products were really as good as they say, they wouldn't do this. Plus, they tell you that you cant use water wetter or any additives in the systems, or it voids the warranty, if you dont use additives there will be so much growth and corrosion that the system will be destroyed. If you like OCH, or think they are good, you need to stop smoking that crack pipe........