Fzone 2.5 L Aquarium CO2 Generator System Carbon Dioxide Reactor Kit with Regulator and Needle Valve for Aquarium Plants Tanks

The media could not be loaded. Excellent product. For years I have struggled to maintain a co2 consistently due to issues with local supply.Using a recipe of 600g citric acid, 786 g baking soda, and 900ml of distilled water I am consistently holding 52 PSI with the tank holding in the green. The solenoid works perfectly, simply screw it in between the regulator and the bubble counter and plug it into a timer.This system also ramps up quickly once turned on, typically it takes a while for the BPS to come up, but this one is at full speed within a matter of minutes.My plants are loving the new addition to the tank, and I will be adding significantly more soon.I am running an 18 hour automated photo-period light with the co2 system running to an inline diffuser that runs through the spray bar.I recommend using a calculator online to determine the approximate BPS required for your tank based on your PH, KH, plant density and tank size.

The media could not be loaded. Just received the product this afternoon and got it up and running. At last look it is charged with about 410 psi CO2 and 60 PSI in the can, which is good. I am very happy over all with the product, but I do want to point out some serious issues with the written directions included with the system. I think they are really bad because it does not even address how to hook up the Solenoid. I figured out by intuition. The really big mistake in the instructions is the wrong material weights and water volume to mix together in the tank. That mistake cost me $16 in citric acid and sodium bicarbonate material. I had to depressurize the cylinder and empty the contents and start over. That was really bad. I have included pics of the instruction sheet and the label on top of the cylinder in yellow, which does not match steps 1 and 2 in the instructions. Also, I did end up breaking the curved glass CO2 hose connector that hangs over the rim of the tank trying to assemble it. The adjustable valve that releases C02 into the bubble counter is very very very touchy and hard to dial in because it is tight to turn and the slightest adjustment once it is open and gas is flowing will exponentially alter the bubble rate. Not a fan of the adjustable valve because it is so difficult to dial in. I tried to time 1 bbl per sec but could not exactly dial it in. Close enough I guess. Over all, for the price and what it achieves it is a good product and I do recommend it. I plan to keep it for at least 90 days to see how it performs. If I end up being dissatisfied with the system, which I do not anticipate at this point in time, I will purchase a 10LB CO2 tank from Airgas nearby and get CO2 refills going forward for about $30. I also purchased the Milwaukee 122 PH controller at Amazon to mitigate any harmful PH changes in the aquarium. It will shut off the solenoid power on the CO2 tank if the PH drops below my desired limit. Pretty cool setup over all for a relative low cost CO2 system and I'm pretty excited about it. Hope this info helps. 60 day update: refilling the cylinder because it was close to being in the Red on the C02 gauge. However, there is an issue with the PSI tank gauge. It is stuck at 50PSI but, the regulator is not even connected to the tank. I disassembled it to add the new ingredients. I tried tapping on the glass PSI gauge to get it unstuck to no avail. And of course its past the 30 day return period. See added picture.

Wasn’t sure about a DIY co2 generator but this item has been great and long lasting. First filling lasted 3 months for my 50 gallon tank. The co2 has dramatically helped my plants.

Set up in June, and it's been a headache. I have had to replace the solenoid valve. I have it set with a timer, and after some time the co2 and bubbler wouldn't turn on. I had to manually turn on co2, and adjust throughout the day, everyday. If I didn't do this, the co2 would slowly shut off. Due to the instability in the tank, I have fought with algae most of these months, leaving my plants became susceptible. Replacing plants became an investment as well. Please do yourself a favor and invest in something better than this cheaply manufactured product.

This is such a neat DIY. Works well. It did take close to 24 hours to get the first mix at the right pressure. Some people say it can take as little as 15 minutes, but mine has not.For my 20 Long tank, I am diffusing at 2 BPS and still have half the tank life left. So I can expect it to last about 3 months on one mix.Do yourself a favor and buy a different diffuser. That being said I would buy from this company again and again.

Great product, works fantastic!

I used to diy sugar and yeast solution. The problem is I can’t time it. This co2 reactor is a game changer. I should have bought this when my planted tank was set up. For a 2.5l tank I use 230g citric acid, 300g baking soda and 470ml water.

I will say follow the instructions correctly and just buy citric acid snd baking soda. This way you will get excellent item with less money.