Dosing your tank? How much?

[JimmyZ19]

I have a 90g mixed reef which has become more dominated by SPS in the last 6 months. Basically Duncan's, lobos, Scoly's, and zoanthids. Everything else is Acros, Monti's and various other SPS colonies. I am now dosing 114ml/day of Kh and 86ml/day of Ca. It occurred to me how high that is compared to a year ago (more than double). Question is, what is your demand, generally what do you keep, and what size is your tank?

[captbenjy]

Have you considered a calcium reactor? I barely have any SPS in the 120 but plan on adding more once my 225 is running. After doing a lot of research I picked up a GEO 612 from a reefer getting out of the hobby. Supposed to eventually be cheaper than dosing and much easier. Currently I'm just adding Kalk to my ATO water and have great results.

[JimmyZ19]

Nah in the short term getting a controller to monitor ph and the reactor/co2 will just be too expensive. I spend about $20/month which is reasonable. Now, if I had a larger aquarium (maybe like 180 or larger) I absolutely would dive in and spend the cash. At some point I might add in Kalk to supplement and lower the cost of 2 part if it gets out of hand. I assume it won't get much more demanding.

[Sandy]

Jimmy, sending you a pm