Planted Tank Guru
Join Date: Jan 2010
Location: Contra Costa CA
Carbon comes in several forms, some of which is available to plants, but most is not.
CO2 is available to all plants.
Carbonates can be used by approximately half the plants we grow as a source of carbon. They only switch over to using carbonates when the CO2 is gone, though, so it is sort of like an emergency source. It can be added to aquariums in any of several forms, but in any form it is a buffer that will tend to maintain a higher pH if over dosed. Putting some minerals like coral, limestone, oyster shell or cuttlebone in the filter can add carbonates to the tank.
What is vsv? The active ingredient?
The active ingredient in the liquid forms of carbon like Seachem Excel is gluteraldehyde. (I do not know the concentration)