calcium products

I’ve been dosing All for Reef for a month now, it seems like a good product. At first it brought my high levels of Alk down to proper levels. Calcium levels has been stable around 440/450. Calcium has started to drop more frequently and Alk has risen back to 14/15KH. I remember watching a BRS...

Does anyone know who produces BRS additives for reef tanks?

I’m having trouble balancing calcium and alk and unsure of what products work best. I’ve been using seachem with poor results. Also, I’m not sure I even understand how to use them properly. Is there an all in one product easy to understand and use that anyone recommends? Thanks in advance!