allsps40
New member
Tank looks great and so do your parameters. Try to get the alk stable. Strange that it swings that much with kalk dosing. Kalk ATO keeps my sps system rock stable. Dosing 2 part may be a better choice or a Ca Rx as DjScibbity said. You have good lighting and a good skimmer. The only thing I saw that I did not like to much is the small of the sump compared to the tanks size. I would have suggested a 75G sump for a 200-250g display tank. Skimmer is a good skimmer. You may want to increase flow if you are planning to add sps to the tank. Other than that welcome to Reef Central and Frag.