BAOSHISHAN 2L Aquarium Co2 System with Precision Regulator, External Thread Co2 Generator System with Dual Safety Valves & Solenoid, Complete Set for Aquarium Plant

works great has been running for over three months for six hrs a day on timer meter still shows high in green area

The tank is quite good and it works nicely (so far, less than a week from the first launch). However, its solenoid valve doesn’t do anything at all: whether or not it is on (the green indicator LED on), the gas is bubbling with the same rate. UPDATE: after I had disassembled the valve (found a pice of advice on a specialized forum), stared at its guts menacingly and then assembled it again, it changed its mind and started to work. I am not sure whether it was a stuck spring or my threatening stare, but… so far so good.

It worked perfectly at first, and I had no issues until about a week ago when it suddenly stopped releasing CO2. I emptied and refilled the system to ensure it wasn't just out of gas, and I confirmed there are no leaks. Despite this, it still won't release any CO2.

It's a decent DIY solution that's much better than doing it yourself in a 2L bottle. Does it have its challenges? Absolutely. It's not like a typical CO2 regulator that is just filled up with gas that you pump into your diffuser. This uses baking soda and citric acid to generate CO2 and if done properly, is highly effective. But due to its design, you do still need to pay careful attention to your drop checker and the overall consistency of the CO2 output is dependent on a lot of other factors as well like temperature and how long it has left in its monthly cycle.

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