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That's rude to say.Whatever.
IMO, its nitrate dosing. Had similer thing happning to me when I dosed.
If i were you i would do a big WC and stop the dosing.
Gentlemen sorry i did not reply sooner, I sometimes get busy. I truly appreciate everyone's input. I run my magnesium very low , around 1200 for as long as i can remember, this and other corals have been grown in that magnesium level. The reason I do that is when i try to adjust my alkalinity , i sometimes tend to overdose my alk (go above 8.5) . this way it does not go too high . The problem was with the lights and nitrates. I turned down the lights and moved the coral. I did not save that particular piece, but few others seem ok for now.Sorry to offend you. It's frustrating to be completely ignored when my comments were valid. Growing Acropora spp. in water that is extremely low in mag isn't meeting those corals habitat needs.
did you clip a frag and replicate it?
i will disagree with this as boogyman aquascience.
Gentlemen sorry i did not reply sooner, I sometimes get busy. I truly appreciate everyone's input. I run my magnesium very low , around 1200 for as long as i can remember, this and other corals have been grown in that magnesium level. The reason I do that is when i try to adjust my alkalinity , i sometimes tend to overdose my alk (go above 8.5) . this way it does not go too high . The problem was with the lights and nitrates. I turned down the lights and moved the coral. I did not save that particular piece, but few others seem ok for now.
Sodium nitrate? Ive never heard of anyone using it , are the mixing instructions the same ? I might just pick some up instead of getting K test kit.Thanks for the explaination. I've been dosing KNO3 for six months and have seen excellent results; however, recently a few of my acros started showing less PE, so I tested and found that potassium was high. I ordered food grade sodium nitrate on Amazon and have been dosing for the past week. Acros love it even more than the potassium nitrate (until the potassium gets too high).
Adam at Battlecorals uses it. I mixed two teaspoons in 4 cups freshwater, then tested it on a gallon of new saltwater (ie no nitrates). I've been dosing my 38 g at 4 ml a day to maintain NO3 at 2.5 ppm. I should probably raise it a little higher, but I'm chicken. The tank has eight fraggable sized colonies and lots of others of smaller stuff, plus a hammer, an elegance, a large plate, and two large Lord acans (Micromussa), so it has a relatively high nutrient demand.Sodium nitrate? Ive never heard of anyone using it , are the mixing instructions the same ? I might just pick some up instead of getting K test kit.
Update, so far I've reduced my lights by about 10% , dosed nitrates ( increased about 1ppm worth) , (continued dosing elo's aminos) , things seem to be OK , I saw slight darkening in my corals, nothing too serious, polyp extension is the same. My skimmate production doubled since I started dosing. I will begin increasing my lights by about 3% every 4 days .
I have a few pieces, i will be monitoring the system for the next few days, if i see anymore casualties, I'm going to start looking into other causes, hopefully this is not bacterial .make a frag of that PM. i think you may have something else.
the rest... is expected
I have a few pieces, i will be monitoring the system for the next few days, if i see anymore casualties, I'm going to start looking into other causes, hopefully this is not bacterial .
[...]I run my magnesium very low
[...]The reason I do that is when i try to adjust my alkalinity , i sometimes tend to overdose my alk (go above 8.5) . this way it does not go too high .
The problem was with the lights and nitrates. I turned down the lights and moved the coral. I did not save that particular piece, but few others seem ok for now.
My acropora polyp extension was insane that night. So i believe my tank can benefit from some nitrate dosing .
people change lights out all the time.
that is not what caused his PM from stn/rtn.
bleached? sure.
browned? sure.
All stresses are cumulative...no single one did it.
Lighting changes like he did (due to no fault of his own) are definitely stressful....and it's made even more stressful in a low-nutrient environment. That only account for what we know about the tank.
It's very possible for a lighting change to cause mortality....check that "Long term effects..." article... (I think i was that one...too many articles!!!)