DIY CO2 Generator System Aquarium Plant Kit with Gauge Valve | Compact reactor design, plastic components, compatible with 2-liter soda bottles, safe for freshwater moss tanks

I just needed a temporary solution. Planted my tank a couple of weeks ago and want to get a boost on the plant growth. So, plan to use the CO2 generator for about a month or so. This contraption is perfect "quick and dirty" solution for me.For the past 3 days, the CO2 generator has been injecting a steady stream of CO2 into my tank. I measure the amount of CO2 injection via a S.T. International Aquarium CO2 Hanging Bubble Counter with Check Valve and a limestone to diffuse the bubbles in lieu of the standard ceramic since I already have it on hand.The needle valve works perfectly. I can dial in on the bubble per second and completely shut it off which is what I do an hour before my lights turn off. And, the meter seems to be functional.

Works like a charm! Setup is super easy, the instructions included are actually super great and helpful, they put in actual work into how to use it. It's still going strong. I guess it takes a bit of fiddling to get the output levels just right, but it's no big deal and I don't think there's any way around a DIY kit. I think this is way better for someone who just wants a slight upgrade to their tank, and isn't trying to go all-out or spend a lot of money. My plants finally pearled!

I just set this up yesterday and have had it running all day today. The pressure gauge works as intended, the seals are all air tight, and it came with the perfect amount of tubing to set the bottles up where I wanted them to be. The only downside is, the needle valve on mine does not work and I'm not sure how to go about getting a replacement. It sort of worked when I was setting it up, but it was a little finicky and didn't feel like I had much control. Now, it is running full force at about 3-ish BPS even though I have the needle set tightly on closed/off. I'd really like to be able to fine tune my CO2 production rate, but for now I am stuck with just On/Off using the provided magnet.*UPDATE* I contacted the seller and they were helpful. They offered to send a replacement right away which was nice. Down side is it took a couple weeks to ship, but I can't complain too much there. The new package was about the same as the original, except they threw in an extra shutoff valve so I wouldn't have to keep turning the needle valve off each night. So far, things have been working perfectly and I'm happy with the replacement. I get that they don't include that valve to save on costs, business is business. But if they want to offer a more quality product, that valve should be included in the first place. That would really make it a 5 star product for me.

There is no bubble counter which can be frustrating. But the biggest criticism is that it leaks which makes me waste my money on citric acid and baking soda. It makes it last for maybe 3 days at most rather than a month. It builds up so much pressure that over a little while of it being on it let's out too much co2 into the tank. Just very dissapointed in this product.the value for your money is not worth it.

I’m using this for a yeast system so I don’t need the pressure gauge or a second lid, but it works perfectly. The valve is really useful and it seems like the issues people have with it are probably from misuse. It’s easy to misunderstand how it works and the directions aren’t very clear.Since I’m only using one of the bottle caps I could use this for two setups which is a perk. Last note is that I would definitely get a bubble counter with this. It’s super cheap and worth it to be able to see exactly how much (or how little) co2 you are putting out.

Bought this product and it lasted a little less than a year before the valve went bad. The setup itself is actually quite good, and if you can get everything to be gas tight it'll generate CO2 for 2-3 weeks. Other times you're lucky if it lasts a day. But if it's operating correctly it's good. It comes with easy to understand instructions which were much appreciated.However... the valve being used is not the best thing in the world, and it constitutes at least 75% of the value of this kit. It can be difficult to adjust the flow to work correctly, and when the CO2 runs out the water in the bubble counter may back-siphon which I think is what eventually corroded the valve to the point where it can no longer shut off the flow. Replacement valves can cost more than the product itself.It's worth the money in the end, you can get some good use out of it and plants grow very well with it for a fraction of the cost of a real setup. But, this isn't a permanent solution to your CO2 needs

The pressure gauge didn't work on arrival, but started working after few days of using the system. Now everything is working perfect. the magnetized intake makes the adjustments easy. Came with clear instructions on how to use the system. giving five stars because the pressure gauge is not essential for the operation, and most low end gauges are notorious for being stuck; for the price, hard ask for much more.

Disappointed. This setup honestly initially worked so well. I was so impressed and very happy with it. My 20 long full of plants was visibly thriving and each batch of “recipe” lasted me at least 10 days. Unfortunately, the adjustment valve suddenly stopped working and now I can no longer turn the flow on. It broke exactly 2 days after the return window which is a bummer. In sum, great product but poorly made.