For producing RO water for the fish, as well as our drinking water, we have a Kent Marine RO unit in the kitchen. Due to the large amount of water needed to produce, the output goes into 5- and 6-gallon water containers rather than a standard RO tank. These containers are a pain because algae grows in the bottoms and the openings are not large enough to get my hand in to clean them. I have tried a long brush, but that still doesn't work so well. Anyway, I just bought the largest Vittles Vault available, which is supposed to hold 13 gallons. I chose this because it has a HUGE opening for easy cleaning, is food-grade plastic, and is large enough to let the RO run overnight without running over (at least that's my theory). Now comes the problem of how to get the water out. For the time being, a siphon hose is the obvious answer, but I would like to add a spigot. The people on these forums being the DIY geniuses that you are, especially when it comes to dealing with water, I figured somebody must have at one time or other put a spigot on something and could offer some advice. Everything used would have to be safe for fish and humans, as we might be using this for our drinking water as well. Where would I get a suitable, food-safe spigot that is guaranteed not to leak? I read a suggestion for using anti-fungal, food-grade silicone for sealing. I'm guessing the anti-fungal part would be a no-no for fish water, but I Googled food grade silicone, so apparently there is such a thing, but I'm thinking it would probably have to be ordered online. Any help would be appreciated.