[viiagrag]

So in my tank I have a few plants, and no injected CO2. For a couple reasons, it's a road I don't particular want to go down.

Instead, I use glutaral, which is a bioavailable liquid source for plants. It's sold under a couple of different brands/names. What they don't tell you is that it destroys algae (and turns your skin brown!).

Whilst algae isn't something I'd like lots of, it's still nice to have for my fish to munch on, as it's their native food.

Is there any difference between using glutaral as a source of carbon, or sodium bicarbonate? Is one more bioavaliable than the other? I probably should mention that the pH induced by using bicarb soda is ideal for my mbuna, so that's not an issue.