DIY co2 and increased co2 absorption

[Beermann]

Just thought I'd share my little co2 project for my 65g. I rigged up a co2 fire extinguisher for about $30 (extinguisher, connectors, timed plug for auto on/off at the cylanoid). I also made my own bell/diffuser with on old whiskey bottle, drilled a hole for the input off a small filter and a hole on the bottom for the outlow and a bleed off line for when too much air is collected over each month of operation. The most expensive part of this project was the regulator i got for $60

By trapping the bubbles and using a small filter to make a small cyclone effect I'm running at about 50 bubbles a minute! Normally for a tank my size my understanding is 2-3bubbles per second so this is about 100 to 150% more efficient!!...And my co2 levels are almost in the green!

 

[Mudminnow]

Is water and CO2 entering your whiskey bottle via that tube in the top?

It seems your bottle may work as a fish trap too.

 

[Beermann]

Is water and CO2 entering your whiskey bottle via that tube in the top?

It seems your bottle may work as a fish trap too.

The line on top is just a bleed off line that extends out of the water with an open/close valve. Since all the co2 gets trapped in there, there will always be a small amount of left over gas even after 100% dissolution. If you observe passive co2 diffusion youll see that a 1L bottle will dissolve its co2 and leave aboit 1/4 of inert gas/o2. So once a month I open this valve and get rid of the trapped air.

The co2 is fed from the extinguisher to the bottom of a small 5g filter which is attached to the bottle (all media removed from filter) when the co2 line feeds bubbles those bubbles are sucked into the impeller to be chopped up and fed into the bottle where a cyclone effect continues to agitate the trapped co2 and fully dissolve it. It's basically a diy co2 reactor without all the bells and whistles.

Since the only opening is very small and also the outflow, nothing can get inside the bottle

Is water and CO2 entering your whiskey bottle via that tube in the top?

It seems your bottle may work as a fish trap too.

Here is a better explanation/drawing of the flow. Once the bubbles are in the bottle the pump acts as a cyclone to agitate and dissolve all the co2.