- Joined
- Jul 1, 2019
- Messages
- 13
- Reaction score
- 6
- What state or country do you live in
- New York
I bought an 150 Gallon tank a few months ago, it’s been running good have been growing some SPS and LPS, the tank came with this thing. I haven’t used them since I got the tank. What are they? And how do I use them? I can’t seem to figure it out but it looks like it can help me keep phosphates down. Please help me out



