How do I know the machine is working and it is not external factors?

How do I know the machine is working and it is not external factors?

All of our tests have been conducted with strict quality control regulations in the same soil and environment, with the only change being the water. Regardless of a good year or a bad year, you can expect water savings and higher yields with Aqutonix. We are also constantly undergoing additional testing protocols with national universities, local governments, and our partners.