Quote:
Originally Posted by Snaz
I am using the Salifert titration kit. There is a test mixture of dKH 6.1 which I am able to test exactly too so I trust my method is good. I do weekly 10% water changes with Instant Ocean. I am due for a water change in a few days so I will test the fresh mix then.
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http://www.bulkreefsupply.com/store/reef-calculator
I found this page and with baking soda I raised my dKH from 5.1 to 5.7 I have a batch of salt water mixing overnight and I will measure the dKH of that tomorrow.