Co2 bags

I'm looking to add a co2 bag or 2 to my small 3x3 or 4x4 led grow. Does anyone have any experience with the bags? I've been looking into the exhale bags, boost buddy from 4hydroponics, or the myco2 bags which my buddy is telling me to get. Any input would be greatly appreciated.

Exhale bags work well and will raise the CO2 rate about 350 PPM in that size tent, just as long as you're not constantly exhausting the air. The only reason I don't like them is they have a short shelf life so sometimes you get them and they're partially expired. SNS CO2 kit made by Sierra Natural Science is unactivated meaning you add the water yourself and so you're guaranteed to get the full use out of every one.

Decomposition based CO2 bags are NOT efficient in increasing cannabis growth rate. As a small time grower, I wouldn't recommend trying to add CO2 to your grow space. The only effective way would be to burn natural gas and get the PPM to around 1000-1500 and it would be impossible to justify the costs in a small grow operation. Normal outdoor CO2 levels are around 350-450 PPM

first of all research what co2 actually does for our plants. its does not jus increase growth and yield you have to work at other things to. im no expert at this but I use the co2 bags 1 per meter squared. co2 slows the rate of transpiration(water loss through leaves) so the uptake of nutrients is more available but don't get sucked into the myth that we can run our room hotter with the use of co2 you can get away with it but only because transpiration has been slowed down, so our advantage of using co2 means a higher strength of nute without overfeeding so check your run off and see if its dropping.