What brand do you use?

[A sea K]

Tropic Marin pro reef for salt, baked baking soda for alk, BRS bulk for carbon, gfo, ca, and mag.

 

[homer1475]

I use Instant Ocean and IO Reef Crystals for salt. I buy Bulk Ca and Alk supplement from BRS in 5g buckets. I also get my carbon and GFO there. Test kits are all Salifert.

Same here also.

With the exception of plain old Arm and Hammer baking soda for the ALK part. Either baked or not, depending on my tanks needs.