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DIY CO2 Mixtu A definitive Answer?
Another thought: It seems that one can achieve a maximum CO2-water diffusion *rate* with a powerhead/filter intake + bubble system, but retention of the CO2 will be based on the water chemistry (pH, kH, not clear on this, but indeed it seems chemically related). The new "3-d" NutraFin/Hagen Diffuser seems to be a new spin on the inverted bell system, by forcing the CO2 to move throughout the water , but without any outside assistance (like the powerhead/filter intake method), while retaining the simplicity of a bell style system (the ramps are inverted upside down), but still seems to belong primarily within the inverted bell family of reactors. It seems that inverted bell systems are better suited under conditions in which the water chemistry (that is naturally or unnaturally (chemically assisted)) is better able to retain CO2 since there is no mechanical aid to increase the CO2-Water diffusion *rate*. Likewise, Powerhead/Filter + bubble systems can be used under conditions when you have water chemistry that is naturally less inclined to retain CO2 but have a generator that can output alot of CO2 (the 5lb/10lb CO2 pressurized canister method) whereas inverted bell systems have the restriction of being in water that retains/absorbs CO2 well. In short, I think people (including myself) who have an inverted bell type reactor should think twice about the efficiency of the reaction method, and that reactors that don't "overflow" (big gulp of CO2 bubbling to the top) don't necessarily mean that CO2-Water diffusion is operating at maximum capacity. -- |
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