I couldn't put a figure on it - I've always thought of it as similar, but not as good - because the plant has to use a bit of extra energy to convert the Carbon to CO2.snazy said:You can correct me then.
But to say it's such a large margin less effective seems counter intuitive when you take the following aquascape as an example - In this case when the artist stopped using TNC Carbon in addition to the CO2 he observed a decrease in growth rate and a rise in algae. While any conclusions would be anecdotal I'd be more inclined to think much less of an observation would be made if it were 10 - 20 times less effective....
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IMO