🔥 Premium Stainless Steel Hydrofarm Active Air COSYS20 COSYS CO2 System with Timer Review

This meter works and is affordable. Ease of use and fun. The carrier was fast, arrived early. The company has a lot of great products that I have used and the free samples are great.

Poor build quality but it's the only one I could find for small spaces. I was able to make it serviceable by taking the adjustment stem apart and wrapping it with teflon tape a couple of times. I'll be switching to a fuzzy logic controller, saves $$$ in the long run.

I bought this for my son's research project at school. Unfortunately, a small black piece was missing, making the kit unusable. To make matters worse, the test tubes were broken. I would rate this as my first no star review if I could.

This regulator was just what I needed. I have a 10 x 10 x 10 foot room where all issues are fixed. This unit could have been used in a larger room but I wanted to make sure, sorry. So I am very happy with my order. The instructions were very clear so once again I am without a doubt satisfied with my order.

CO2 seems wrong when you try to get it down to 0.1cfm but otherwise works fine. To work around the problem, I'm releasing a higher rate for a shorter period of time. This unit isn't noisy, but as other reviewers have pointed out, the solenoid hardware can get warm. Since I only run it in 15 minute "bursts" every few hours, it really doesn't matter (it doesn't affect the ambient temp and my ppm never goes below 1500).

What you see is what you get and it works great. Keep in mind this isn't an industrial quality regulator like Milwaukee, but for a little hobby this is more than enough. Setting the flow on the regulator, timer for the solenoid and starting the line all took 15 minutes and works great. Fills an area of 175 square meters without any problems. If you are considering CO2 for your grow, stop thinking and do it! You will appreciate the win!

EDIT 5/7/15 Okay, first of all this CO2 injection system works exactly as advertised. I have a 10x10x8 grow room and didn't buy a CO2 meter so after sealing the room with silicone I set the flow rate to 2 hrs. meters of CO2, it accumulates quickly. I reset it to 0.5 hrs. Cube feet per hour and now at 5pm my CO2 is around 1500ppm easy to set up and adjust but you need a digital CO2 meter. BLACKED. I've been using them for a few months and thought I'd give an update. First, I like the rubber…