DIY CO2 head from China review

I did a review on ready made head designed for DIY CO2 system. Ordered at Lazada costing RM72.00 inc postage. Took about 10 days shipped from China. I received the goods nicely packed, and they even include an instruction to produce CO2 with citric acid and sodium bicarbonate. I did not use that formula as I'm used to yeast and sugar formula.

This time I ordered brewers yeast instead of the normal bread yeast, as I was told that brewers yeast will last longer as they can withstand alcohol. After mixing everything I waited for reaction and non could be seen. At first I suspect the diffuser was set too deep which need higher pressure. So I raised it to 6" below surface and waited another day.

Next day still no bubbles could be seen, and I suspect a leak. I remove the diffuser and and put the hose in water and I would see bubbles coming out. So the mixture is good, no leaks but why is there no bubbles? I'm kinda puzzled.

3rd day I decided to add more yeast and after 3 hours there was still no signed of bubbles, I shake the bottles hard and I could even hear fizzing sound. And walaaaa bubbles started coming and then I saw there was a leak at the pressure meter.

So that is why it couldnt produce enough pressure to work. I dismantle everything and seal the pressure meter and pressure release valve with silicon adhesive. So the head is now without safety pressure release and I would need to be careful on that part.

Next day I assemble everything again and yessssss now it works like a charm. CO2 is bubbling and I set it 15" below water surface.

Leak at the pressure release valve

Sealed the pressure release valve with silicone glue

Now its working finally!!!

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