CO2 meter suggestions

Yay, was able to send. So a pro leaf controller will give you a sensor also. It's needed for the controller to work. And then you hook up a reg. You can get the same brand proleaf and all the top co2 makers use the same parts to make their regs as they're the most reliable and have been around the longest so you'll find any reg with solinied valve will allow you to set your ppm from 400-2000 and reading go way beyond that. I breathed on it. And jumped up to 4000. Even working in my tent it jumps from 800 to 1400 in a few breaths. Its so accurate. As I said you find it for 290 on an eu site led grower. But can push past 500 on others. Then the regulator will set you back 80e 100$ if you stick with pro leaf. You send the company themselves an email. And they'll offer you cost price 260& +35$ shipping from China. That's the PPM B1 pro leaf controller & pro leaf reg. I just hooked my controller up to a 1L bottle and sol valve to see was it for me. It is ti see when my plants aren't eating or are within 30m i know their performance. It really is going to change my grows. I've learnt only in the short time in perfecting my feed/sugars/enzynes and rh/temp and I can tell if it drops 500ppm in 20m or if they are struggling and could take an 1hr. If you've any Q feel free to ask. If u contact them just ask can they do you a deal. They'll give you cost price with shipping it'll set you back 300$ if you're in us. I bought in eu as vat here is a bitch from the China and it actually cost me less to buy from a company who buys wholesale from them.