Review on 🏭 Optimize-It: Enhance Your Greenhouse Efficiency with the Day Night Monitor Controller by Danny Zapata

Works great. I've always wondered what my PPM levels are without CO2 supplements. Well it starts at around 600ppm and goes below 400ppm. Now I've got it, not only can I control my levels but of course I've added a 20lb CO2 tank. I keep my levels at 1100 PPM and it's been 3 weeks since I bought it. I've noticed big changes in the growth of my plants. The girth increased and I had to increase the room temperature from 75°F to 80°F and the nutrients from 0.6°C to 0.9°C. I noticed my nutrient solution dropped 200ppm in 2 days. I usually only see these drops during the week and in the transition period (e.g. 2nd week of flowering). Update: The new model has high and low settings. Got a newer one when I ordered another one a year later. Update: Since using this meter I can monitor CO2 addition and CO2 loss. That saved money. Now my rooms are sealed and I can get a 20lb bottle that will last 2-3 weeks at 1200ppm. I doubled my output after adjusting nutrients to match the increased metabolism due to CO2 supplementation. The cost is $13. CO2 every 2 weeks. Best $78 per grove ever spent. No bottled nutrient will give you results like CO2.