I think it is one of the largest, English language, forums dedicated to aquarium plants. It is certainly one of the best known.
I want to highlight two sections: "Lybrary", with the aquariums of the month, and DIY section where you can find beautiful articles on all aquarium ware. Sticky, here, a discussion on yeast CO2, that is nothing off exhaustive, and a long discussion on Drop Checkers.
Posts
