- Joined
- Feb 15, 2017
- Messages
- 29
- Reaction score
- 22
I run a HOB on my 20 gallon frag tank and it's my cleanest tank haha. I run Chemi pure blue in my HOB that's it. And I have a half a bottle with filter floss stuck to a power head for mechanical filtration. I just squeeze out the sponge every water change.