I would like to see someone make a custom made styrofoam sleeve that a 5 gallon dwc bucket would fit in. Anyone who has had meds shipped to them know what I mean. I have looked around and so far no one has made these. A simple white heavy duty styrofoam sleeve would be a great, cheap and reusable way to manage temperature control in dwc. Plus you could sell advertising on them, nutes, seedbanks, light company, ECT. It will also allow any 5 gallon bucket to be used for hydro, regardless of color, as it would block light. Really, why hasn't this been made yet. I have made and used a home made prototype, and it made a huge difference in how cool my water stayed in Hot Alabama summer temperature. If I had the money, I would have already been producing these, as I do believe they would sell. Just a thought.