Reef Angel Forum

This is not the same gravel that you used on your established tank, then I assume. It isnt by chance calcium carbonate or crushed seashell is it or Cichlid sand or similar?

Just came home from work and I heard my dosing pump running 4 hours after it should have been. It dumped 2 weeks worth of 2 part calcium. I took a quick test and got 670 any thoughts would be appreciated thanks