PFK article.Carbon in the planted aquarium: Gas vs. liquid.

[D-MAC]

http://www.practicalfishkeeping.co.uk/content.php?sid=4080&utm_source=PFK_newsletter&utm_medium=email&utm_campaign=July_1_2011&utm_term=Carbon_in_the_planted_aquarium:_Gas_vs._liquid&utm_content=html

 

[Tener ds]

interesting read that D..