Meh, I'm lazy, the blackwater stuff works well enough for my fish and I. It's even better in the goldfish tank (I was curious!! lol)
The stuff in the yellow bottle I feel is better, considering it's already a liquid, and there's not a very big chance that particles can fall through the filter and get into and irritate my fish's gills.
The stuff in the yellow bottle I feel is better, considering it's already a liquid, and there's not a very big chance that particles can fall through the filter and get into and irritate my fish's gills.