Carbonated water - would it work!?

[tom_m2k]

a pointless question i have often wondered about...

Filtered water + carbon dioxide = Carbonated water

assuming this is correct, could a cheap bottle of carbonated water from tesco/asda/sainsbury's etc (usually priced at around 10p for a 2L bottle) provide adequate CO2 if used in place of a regualr water change? or would it be a waste of time!?

 

[JamesM]

The short term effect wouldn't be worth the cost imo..

It is possible though - this is how the great Amano discovered the benefits of co2 in planted aquariums.