Just upgraded to a more "full" dsb last week - 4" to 5" throughout, 6" in some places, by adding a couple inches of sugar-fine sand. (although I wish I had a layer of courser sand over that).
After about 5 days, I'm seeing tons of bubbles on certain parts of the substrate. I've always seen a few through the glass, but this is a big increase. Once in awhile, a bubble or two will break loose and float lazily to the surface.
These bubbles are suddenly showing up in various patches throughout the substrate.
Is this denitrification at work? (I really, really hope so!)
After about 5 days, I'm seeing tons of bubbles on certain parts of the substrate. I've always seen a few through the glass, but this is a big increase. Once in awhile, a bubble or two will break loose and float lazily to the surface.
These bubbles are suddenly showing up in various patches throughout the substrate.
Is this denitrification at work? (I really, really hope so!)