Thanks for that. In addition to the container, we also need to supply a fresh inoculum to ensure consistency (and so be able to guarantee consistent results). But yes, depending upon factors like the presence of air in the head space of the jug/carboy/etc. (which isn't a factor with the collapsible container in this kit), we couldn't truly be sure of achieving the highest degree of consistency. Additionally, because this particular vessel is collapsible, it doesn't chug in air (along with potential contaminants) as it empties. The spigot that comes with the container not only allows for easy and precise dispensing, but also helps to prevent contamination.
We do take sustainability very seriously, and that is reflected not only in our products but also in how we built our production facility (more about that in coming months!). In fact, PNS HomeGro was itself created for that very purpose--to allow aquarists to use large volumes of cultures (one of these kits treats over 8,000 gallons!) without dozens of bottles and fuel to ship them. As such, this container contains a relatively small amount of plastic for the amount of product it generates. Moreover, every part of it, aside from the small piece forming the mouth, is recyclable. Better yet, however, it is easily reused after cleaning, and we have many times in the past suggested using it to mix/store clean saltwater, kalkwasser, etc.
In the end, while taking every measure to keep our products and their packaging as environmentally friendly as possible, we only use materials we've discovered through years of practical experience to work best for the cultivation of these bacteria. Thus, the kits use the very same materials we use in our own production facility, thereby standardizing cultivation conditions and allowing us to offer the peace of mind that comes with an unconditional guarantee of success.
As mentioned in my last post, a version of the kit that was minus the container would be almost the same price (but not guaranteed). While someone buying such a version for reasons of sustainability would be very well-intended, they'd likely be pretty upset to invest that amount of money and time into an effort that ultimately failed. And I do sincerely believe that failure rates would increase with decreasing standardization. At present, with success rates that have actually exceeded our initial estimations, we intend to continue offering a single, complete kit along with our 100% guarantee.
That being said, if I missed any points, or seem to misunderstand any part of what OP or you asked, please feel free to press me here. You may also call us with your suggestions at any time (1-541-912-2906). We do listen: The PNS HomeGro kit was itself developed as the direct result of a request from the community! :slightly-smiling-face:
Thanks again for your thoughts, and happy reefing.
