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- Feb 19, 2020
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First and foremost, I just want to provide as much detail as I can so all the information needed is available. I know not all maybe relevant but I've never posted on a forum before asking for help either, so please bare with. We have a 125 gallon mixed (SPS,LPS, Softies, Sea Fans, NPS and Photosynthetic) Reef tank. Current tank residents include an Australian Harlequin Tusk fish, Yellow Eye Kole Tang, Fiji Foxface, Lawn Mower Blenny, Starry Eyed Blenny, a Peppermint shrimp, Arrow crab, Crinoid Squat Lobster and we have a bunch of hitchhikers from some live rock we introduced a while ago, fleshy limpets, tunicates, sponges, chitons etc. My boyfriend and I recently purchased an acro and pavona frag, our very first acropora and pavona coral. They shipped Monday (11/30) and arrived Tuesday (12/1) by the next morning (12/2) the acro exhibited RTN and was almost completely white, with pieces of flesh stripping off when I had checked on the tank, which I do every morning, it's my routine. The pavona is starting to show signs of STN Before this, about a couple weeks, we had introduced some red montipora and bubblegum digitata. Both of which have been doing very well and have started to grow from what we've observed. Sorry for the poor picture quality and the corals show up more in person than in pics, might need to invest in a better lens/filter. We also upgraded our lighting a month ago, well before we attempted/bought any SPS corals, to a 72" Aurora T5 LED Hybrid that I will also post the lighting schedule and intensity. I know that swings in parameters, ALK specifically cause RTN but does high Nitrates kill SPS? We literally just ran these tests, and we are stumped at what could be the cause of this. Please comment with any suggestions, adjustments or products that might be helpful, thanks!
Salifert Test Results:
NH3 (Ammonia) - 0
NO2 (Nitrite) - 0
NO3 (Nitrate) -80 mg/L
PO4 (Phosphate) -0.2 ppm
pH -8.2
KH/ALK (Alkalinity/Carbonate Hardness) -8.8
Ca (Calcium) -500 mg/L
O2 (Oxygen) -7
Mg (Magnesium) -1450 ppm
Sr (Strontium) -4 mg/L
I2 (Iodine) - Iodide 0.03 Iodate 0.03
Salinity (Refractometer) -1.027 *After test I added some RO/DI to bring it back down to 1.025 where it normally is.
[Red Sea Coral Pro Salt Mix is used]
[Maxspect Gyre XF 350 Wave pumps one operating at 40% Flow and the other is at 80%]
Salifert Test Results:
NH3 (Ammonia) - 0
NO2 (Nitrite) - 0
NO3 (Nitrate) -80 mg/L
PO4 (Phosphate) -0.2 ppm
pH -8.2
KH/ALK (Alkalinity/Carbonate Hardness) -8.8
Ca (Calcium) -500 mg/L
O2 (Oxygen) -7
Mg (Magnesium) -1450 ppm
Sr (Strontium) -4 mg/L
I2 (Iodine) - Iodide 0.03 Iodate 0.03
Salinity (Refractometer) -1.027 *After test I added some RO/DI to bring it back down to 1.025 where it normally is.
[Red Sea Coral Pro Salt Mix is used]
[Maxspect Gyre XF 350 Wave pumps one operating at 40% Flow and the other is at 80%]
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