Tnb Naturals the Enhancer Co2 Dispersal Canister and Refill for Indoor Garden, Indoor Tent, Indoor Greenhouse, Indoor Grow Tent, Hydroponic Garden

Great folks to buy from. Worked great! For 6'x6', shake lightly every 2 days(Most recent info from TNB website)! Tie tightly BELOW the cap w/rope or twine. Like pic in refill pack reviews! I hung around plant level in front of fan, as CO2 is heavier than air and will stay lower in the area, along with good circulation. Definitely makes a noticeable difference! We only used for 4 wks, to try it out. Right after flowering stretch (about 2-3wks in flower), as I figured that time frame would be when most growth occurs, up to 8-9wks. Next time I'd use for 6 weeks, or probably 5, as refills last not quite 2 weeks. I actually ordered a very nice, inexpensive, Hydrofarm CO2 Monitor from Amazon. Gives many details! But because of shipping errors, I got the meter around the 12th day of the 2 week expiration. Levels were still around 800PPM. Next time around I'll keep an eye on the meter, which saves high and low points on a screen w/a graph showing the pattern! Highly recommend for $20 bucks more than the cheapest, which only give the present PPM only. But this isn't a review of that, just what I found on here, lol! I WILL EDIT REVIEW AFTER USING WITH METER NEXT TIME. BUT VERY IMPRESSED WITH RESULTS AFTER THIS FIRST TIME TRYING! You can make your own w/sugar and yeast, but the best "formula" I found required changing contents every day, to a day and a half.. Inexpensive comparitively. But time is money, and it's too much time I found, for me. Not needed in veg if you have good ventilation, as 800PPM is the highest recommended use in veg, and we've always had great growth w/regular ventilation. THIS PRODUCT DEFINITELY GAVE US NOTICABLY MORE FLOWERING GROWTH. A DIFFERENCE MAKER!

This is a great product. It definitely works and increase your use from week five until finish.

These do work but my biggest complaint is they don’t last long at all. You have to refill them every two weeks or they are useless. I think next time gonna stick to co2 bags as they last a lot longer for about the same price. Just wanted to try something else but I’ll stick to what I know.

Ok. Works in a pinch but takes a few days to reslly start

I love the fact that I can activate it when I choose. I’ll write more about this later when I have used it in my grow tent

Good stuff

It only works for the 1st few days and the readings are way lower than what they advertise. After few days you have the shake it multiple times just get a few bubbles popping out of it but once you leave it alone and don't shake it anymore no more co2. And they have to be more Informative 1st it says on the bottle just add warm water then it says on the back add lukewarm waterBelieve it or not there's a difference. And yes you don't get it right by using a thermometerAsk to be between a hunter in 110ﾟ and 90ﾟ But if the recipe Includes Baking yeast it would be a hunter degrees Not sure the writing is really smalle hard to read would not recommend this product find a Better way to disperse Co2 Evenly and not a lot in the beginning in Dan hardly any within a few days Put the money out and just buy a tank and a Regulator it will last you a lot longer and you'll be able to control the amount so much easier Hope this was helpful

Came with a few extra sticker and pamphlets!! Excellent product will definitely get it again.