Aquarium CO2 Generator Kit Double Pressurization Enhanced Version Max for 400g+400g Raw Materials, G700S

Well built! Good instructions. Works great! Plants are now thriving - Very happy with it :)

I can't believe how long I was using the dumb old yeast+sugar reactors all these years. Never again! The measured citric acid + baking soda in a pressurized tank provides a consistent yield with no guesswork anymore and total control over the process (counting bubbles). I used the 2.4L tank for a week+ and it is working very well and the pressure has stayed consistent in tank at 20+ so I think it will last a while for my 29 gal. Getting the solenoid version was a plus as it can be turned on and off in timer with the lights. It did develop a leak in the bubble counter after a few days, and I found I was missing an o-ring (not sure if I lost it or it was never there) but the SERVICE group for Clscea company was great and came up with a replacement for it. So rest assured they support their products. The other accessories (tubing, one-way valve, diffuser) all work fine and look to be good quality.

Worked well, but solenoid failed within 2 weeks and now I cannot change reactants because gauge reads that there is still pressure, but needle adjustment knob removed... yet pressure remains. Help please ??? Is gauge wrong, safe to attempt opening? Or is gauge correct -- but if so, why won't it vent even with knob removed fully?Nov 7, 2022 EDITED ---A lot of my problems were related to making some key mistakes I made. I initially set this tank up, no issues. The second time I had to refill it I was a bit cavalier and added one reagant THEN WATER (this was the mistake) and then the second reagant. This sped up the reaction so quickly I had to put the regulator on in a rush and reactants flooded into the regulator, which seemed to wreck everything.The good news: the customer service for this tank was excellent. They sent me videos and tips on how to fix the problem. They showed me how to safely remove the regulator, which I did, but that next setup did not work because so much reagant had flooded up into the regulator. I attempted to remove the regulator for a second time and the emergency valve cracked off. Again, customer service was excellent. They sent me a new regulator (from China) at no additional cost.Now my co2 is running very smoothly again, but really READ the instructions carefully.1. Do not open the needle valve all the way while under pressure, or quickly, as you could be allowing reactant to move upwards into the system.2. When refilling, add water LAST and try to make it cold water as suggested above.The customer service was much better than I anticipated. This was not easy getting right, but now that it is running right I am happy with the purchase, adding a star to the review.

Works very good and easy!.Update after 1 month: this product is really good and esasy to use, i use it at 2 bubbles per second, and it run for the whole month, even a little more on my 30 gallon tank. (Model G700s)When i refill it there was like cristals in the bottle but i think is a normal reaction, i just empty all the bottle and refill it.I never seen my plants grow so well, i recommend this product 100%.

Definitely worth a try. I will update this review after the first few months. So far, the pressure was slightly under half but my tank is small so I wasn’t bothered. Diffuser is good, regulator works, solenoid is adequate for the price. I won’t put it on a timer. I just manually turn it on and off.Turn off at night.

Not worth the money. Had it running about 3-4 bps, and it ran out in less than 5 days. Having to try to clean out the rock hard chunks in the tank and refill it that often is a huge pain. I had it for about 3 weeks before switching to a real co2 tank from Airgas and a UNS dual stage regulator. Wish I had saved the more than $100 I spent on this plus supplies and used it towards the real setup I ended up having to get anyways. I have a 60 gallon breeder, so can't speak for how long it would last for a nano tank. But even then, the annoyance of refilling it would still have me using a real setup even for a small aquarium.

I read the reviews and was kind of worried about the purchase and leaking parts set it up on a old used fish tank which eventually started to leak. so I emptied my fish tank and recaulked it and in the process I knocked this co2 tank off my dresser so about 3 foot, it landed straight upside down off the concrete floor. I had to bend back the glass piece bubble counter is was really crooked. I was freaking out that I just broke it after all the reviews I read no way this is about to work or work and not leak, but I was wrong it still works good and not leaking I can't believe it.i first layered the ingredients 100grams a layer using my food scale and it started building pressure instantly after adding water and screwing on the lid I'm really happy with this product. Especially with its durability. Some parts do seem kinda fragile so be careful but nothing actually broke in during my accident so obviously the stuff isn't that cheaply made.

first batch of baking soda + citric acid went perfectly.second batch clogged up my solenoid valve so it wouldn't shut off on timmer.emailed cust service.they gave me video to watch instructing how to service solenoid.followed the instructions, cleaned throughly, still didn't work.cleaned it a second time, still nothing.emailed back cust support and they told me to buy another solenoid for $20.so make sure you budget an extra $20 every time you refill, just in case.