I want to add TDS and possibly a PH sensor to my outdoor organic hydroponics system. My biggest question is what sensors to get, I don’t mind spending a bit but it has to be worth the money and needs to last… from what I have read the Atlas TDS sensor might be worth the cost and possibly the PH sensor (although two Atlas sensor would totally blow the budget)
mini-conductivity
ph-kit
Atlas also has an easy way to install their sensor inline, tough it might work with cheaper sensors
probe-pipe-fitting
What Should I Do / Not Do?