But as @Mr Moustache noted, I think it was in response to requests within their discussion board that they developed a filter for the water to pass through while draining that would, in theory, allow for using the same water for more than one record. Given the low cost of distilled water, either way should be fine, but it will be interesting to see whether reusing the water is effective. Not sure why they would have developed the filter if it doesn't get the job done. Time will tell.
True. I think you’d still need to top it up each time as there would be inevitable water loss through the process. I’m sure it will be fine but either way it’s not throwing money away. The implementation of an air filter for the fan intake was a much bigger deal to me.