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More than most products, it's important to understand what this thing does (and doesn't). This tracks airlock activity (a surrogate of fermentation) and estimates change in specific gravity based on the number of bubbles produced. It won't replace your hydrometer or refractometer as you need to enter your specific gravity into the app. The airlock can only be filled with water, not star san (the bubbles will not count accurately). It is very sensitive to suck-back with decreasing temperature. The additio al valve adds too much height to fit in my fermentation chamber, so I switched to an s-shaped airlock during cold crash. You must have a completely airtight seal for this to work. I had a slight leak at the start of fermentation which caused an underestimating of my fermentation activity. The unit must be plugged in via USB to sync to the app and provide data. Even located in a chest freezer in the garage (about 25 ft from my indoor router), I had no connectivity issues and was able to monitor fermentation while out of town. This put my mind at ease since I recently had a batch that failed to ferment due to dead yeast. I like this product and app for the price I paid, but would likely be disappointed if I had paid MSRP.Read full review
Verified purchase: Yes | Condition: New
very nice!
Verified purchase: Yes | Condition: New
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