# 1 is you will want test kits to check anything your dosing.
Its All For Reef from tropic marin. Only cost effective for nano.
Tropic Mairn - The aquatic life science company. Wir stellen hochwertige Salze, Additive und Wassertests vorwiegend für Meerwasseraquarien her. Korallen, Fische und Wirbellose in Ihrem Aquarium fühlen sich mit unseren Produkten wohl.
www.tropic-marin-smartinfo.com
But if you want just the 2 part combined there is Carb Calcium (Alk + Calk).
Its an alternative for Kalkwasser with out PH swing.
Comes in liquid or powder. Has no mag or trace elements like all for reef.
www.tropic-marin.com
Then there DIY all for reef which is Carbo Calcium, Bio-Magnesium, plus trace elements.
Same stuff in the liquid all for reef.
Bulk Reef Supply - Saltwater Aquarium Supplies for Reef Tanks
www.bulkreefsupply.com
I am actually trying the DIY all for reef now but with a lower mag mix and very little trace elements.
Started with just Carbo Calcium. Too early to make clear recommendation yet. But have been happy so far.
Heard a lot of anecdotal good things about all for reef. A single dosing liquid has some apeal.
There are a lot of 2 part options out there . I think if I had a smaller tank and didn't want to try all for reef.
I probably go with ESV. But that's not the only one. I sure you will get other recommendations.