Atlas Scientific ENV-SDS Kit (Full Water Monitoring Kit) (K 0.1)

I used this kit to create a water monitor for my reef tank. Very easy to work with and good documentation. I had one issue with a defective DO probe. I originally thought I had done something wrong and these being electronic modules not consumer products, I expected issues. But a bit of troubleshooting with their customer service determined I had a faulty probe. The same day of my initial email contact the problem was diagnosed and I was in possession of a tracking number for a replacement probe. The support, service, and warranty replacement was smooth and easy. 5 stars because I cant give them 6.