I already run DWC buckets. They are not convenient as i would like them. If their is an easy and cheap way of making waterfarms, then cool, but if not i'll happily spend the money. Lugging 30L buckets of water to and fro from the bathroom is neihter stealthy nor good for my back. For my grow, these are near perfect. If i had the time and could be bothered, i'd try making them, but hell, i can sell 2 ounces and they're paid for. They're essentially free. It's either that or i just smoke more than i actually need to and don't sell the 2 ounces