The daily water change has been up and running for six days so far.
I tested the tank water to day and my KH has been dropped to 7KH. I like to have my KH around 8-9, so I increaced the Kh in the can to 14KH. I hope this will slow the KH drop.
Ca was still good 420ppm, but I use a Ca reactor. In the can the Ca use tested at 500 ppm, which is a high but seams to be doing just find.
My clams seem to be openning a little more and the rest of the corals look the same.
I changed the drain around because it wass getting air lock, no vent to releave the back pressure. I swithed the flex tube for 1 1/4 pvc pipe.Lowered the auto top up 1mm to stop freash water comming on and off as much.
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120 G sps reef, looking to build bigger. 
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