I looked at your items and think that you should do the CO2 controller again there's a lot of temperature items with heat for the most part. I need cooling. Water chiller, ph controller, Co2. Heat is not my issue although it is summer and that ceramic setup would be good at night in a few months. I just am thinking in the now. Thanks for the chance to get CO2 going. Good luck with your promotion. Hope you get some business out of it