I would like to speak out here. One thing that can be done on the cheap so to speak is SO2 additions. This should be done by everyone. And unfortunately, this is the most overlooked and abused piece of protocol. SO2 additions will keep bad guys at bay. And at the same time will help to capture O2 as it becomes exposed to your mead as well. All too often. People will add it in very small doeses once, when they stabilize the mead. ABout 40% of the first add becomes bound to other particles in the mead. Once it binds with other particulates it is no longer available to go to work. Each time you expose your mead to oxygen you rish exposure issues. And so each time you do anything to the must more SO2 becomes useless. So it'sa not an "add once" proposition. It's a continual addition type of prtotocl. To be exact you need an analyser. These are somewhat pricey and might not be in a budget for an occasioanal mead maker. But never less. If you buy a pH meter ( only $15 or so) you can then make adjustments. I will provide a chart that will help you to guesstimate the apporopriate additions. As well as educate you to the binding aspect I spoke of earlier.
Here is the link. http://morewinemaking.com/public/pdf/so2.pdf
Here is the link. http://morewinemaking.com/public/pdf/so2.pdf