Thinking I need to start dosing
90gal mixed reef,55gal sump/refugim
20% water change every 2 weeks,have used brightwell calcion fo two years.starting to get expensive. Any thoughts on brs 2 part .or something else?
90gal mixed reef,55gal sump/refugim
20% water change every 2 weeks,have used brightwell calcion fo two years.starting to get expensive. Any thoughts on brs 2 part .or something else?

