- Location
- Duluth, Minnesota
The std rate dosage is 1/3 cup ROX / 50 gals., if you are currently using GAC. If you have never used GAC, then use ROX at 1/4 of that 1/3 cup and increase it over a month to 1/3 cup. However, even if you are using GAC I would start ROX at 1/2 that 1/3 cup and increase it to that 1/3 cup in a month, as ROX is a very fast absorber. Corals really need to be acclimated to the lower nutient load. Dropping the nutrient load to fast can crash corals at times. Same goes for corals added to high nutient load waters, i.e., should be acclimated.