Acropora dying/bleaching

[Reef1ruler]

Hello I have recently purchased 2 acropora corals and placed them the same height in the tank(at the top) but at diffrent sides of the tank. One of the acropora is doing good while the other is bleaching/dying. My tank is a 45 gallon with a 160 watt maxspect razor led lighting system suspended about 6-8 inches above the water surface. My salinity is at 1.025,nitrate 0,nitrite 0, and ammonia 0, and my calcium, magnesium and alkalinity are all good. They were maricultured corals if that helps identify the problem. My montiporas,Lps,and softies are all doing good. Any help identifying the problem would be greatly appreciated.

 

[FraggledRock]

what is flow like?

 

[Reef1ruler]

what is flow like?

Its pretty intense water flow, but not so strong that everything is blowing over

 

[sreefs]

How mature is the tank? How often do you dose ALK supplement and how much?

 

[CHSUB]

maricultured corals generally don't do well under led lighting. i would try some aquacultured acros.

 

[Reefvet]

Did you dip them before putting them in your tank ?

Are they on the original plugs they shipped on ?

maricultured corals generally don't do well under led lighting. i would try some aquacultured acros.

You can't make vast generalizations like that. It's simply not true.

I have several maricultured SPS corals growing like weeds under Kessils.

 

[Reef1ruler]

Did you dip them before putting them in your tank ?

Are they on the original plugs they shipped on ?




You can't make vast generalizations like that. It's simply not true.

I have several maricultured SPS corals growing like weeds under Kessils.

[/QUOT

No I did not dip them, I have never dipped any of my corals. they are on the original plugs they shipped on

 

[CHSUB]

Did you dip them before putting them in your tank ?

Are they on the original plugs they shipped on ?




You can't make vast generalizations like that. It's simply not true.

I have several maricultured SPS corals growing like weeds under Kessils.

none of your corals look very old...
generally, as in not in all cases. the OP would be better served trying aquacultured corals before maricultured, notwithstanding the LEDS.

 

[Reef1ruler]

none of your corals look very old...
generally, as in not in all cases. the OP would be better served trying aquacultured corals before maricultured, notwithstanding the LEDS.

Well it looks like 1 of the acros will live and from now on I'll just stick with aquacultured corals because I hate to see such a nice piece of coral die that fast. Not saying that an aquacultured piece would live in my tank either.

 

[Spyderturbo007]

Looks like it got cooked from the LEDs. Keep in mind that LEDs have horrendous hot spots. I did some PAR measurements in my tank and the readings were almost mind boggling. Move the meter 3" left or right and the PAR can jump by 25 - 30%.

I suspect it was placed in a hot spot and got cooked. Try moving it down to the sand bed to recover.

 

[Bilk]

Need the rest of the parameters. Stating they're all good is fine, but they may not be for the coral in question - meaning that these are colonies that come from NSW conditions. If they weren't acclimated to your water, then that could be the issue - in particular the alkalinity vs the nutrient level. Seems these are going from the tips, which suggests it could be the alkalinity.

Edit: Also, they should have been placed at the bottom of the tank to allow them to acclimate to the lighting.

 

[myaerica]

my guess would be alk swings