February 2015
Sun
22
Changed 25 Gallons of water
  27.8%
Replaced Carbon
February 2014
Wed
5
I am still troubled by the death of my corals when all chemical parameters seem fine. I ceased dosing NOPOX and have shut down my phosban reactor. I feel I have a large enough fuge with enough Chaeto to keep nitrates and phosphates in check. Perhaps the coral would have prospered with trace amounts. I also noted that I had 40v of stray voltage in tank. Although I believe this has no effect on corals , I installed a stainless steel grounding probe just to try it. Since I stopped dosing and running reactor the pH went from 7.9 to 8.1 almost immediately. I ride this out for a while
January 2014
Sun
12
Wow.....what a job...did all chemical tests. The only one that I question is potassium. Despite doing two titrations, I do not feel like I found the color transition. This verifies that my chemical parameters are reasonable and therefore makes me wonder what the source for my poor coral health is.
Measured Potassium at 398 ppm
Measured Copper at 0.00 ppm
Measured Iodine at 0.03 ppm
Measured Iron at 0.03 ppm
Measured Phosphate at 0.00 ppm
Measured Ammonia at 0.00 ppm
Measured Nitrate at 0.00 ppm
Measured Magnesium at 1660 ppm
Measured Alkalinity at 4.6 meqL
Measured Calcium at 450 ppm
Measured TDS at 0.00 ppm
Measured Temperature at 75.6 F
Measured Salinity at 1.0255 SG
Measured pH at 7.9 pH
December 2013
Thu
26
Changed uv bulb and replaced carbon and GFO. I also repositioned my SPS corals to receive greater circulation and more light. I believe that they are still alive. My plate coral got moved as well. It still has some color although it never changes size and it's feeding tentacles are not coming out. All corals smell okay and Acro has it's normal sulfur kind of odor. I am hopeful they are still alive. My Galaxia never looked better but I understand it is a very hearty coral. I have one Zoa that looks awesome and the other has shriveled up to be nearly non-existent. This problem really perplexes me. A biotoxicity issue perhaps? I am hopeful that the carbon change will make a difference.
Replaced Carbon
Replaced UV Bulb
Replaced GFO
Fri
20
Ok...so i changed 75% of my water over the last 3 days after allowing the pH, salinity, and temperature to stabilize. I am going to leave things alone after changing my carbon and GFO and see if my corals begin to smile.
Changed 25 Gallons of water
  27.8%
Thu
19
Reduced lighting to max of 40% intensity. Full daylight cycle is now 9hrs. Using coral color profile. Increased circulation in refugium and decrease flow rate to display tank.
Measured pH at 8.1 pH
Changed 25 Gallons of water
  27.8%
Wed
18
Corals continue to look bad. Did a 25% water change . I will do this each day for the next 4 days. Temp. Sal. and pH stabilized before water is exchanged.
Measured TDS at 0.00 ppm
Changed 25 Gallons of water
  27.8%