Hey guys,
Quick tank specs,
150g system volume
Salinity: 1.026
Temp: 78
Alk: 8.03 Trident tested (hannah back checked)
Ca: 433 Trident tested (hannah back checked)
Mg: 1311 Trident tested (hannah back checked)
Nitrate: 5.6 Hannah tested
Phosphate: 0.04 Hannah tested
My tank has been up and running for about 11 months or so everything has been running and have been adding a few hand full of acros (have about 25 all small frags 3/4" - 1in") and a few hammers, torch and zoas. All had seemed happy and was seeing some growth in almost all the coral until last Saturday. I have a orange montipora digitata I have had from the beginning that I noticed first with all its polyps retracted and looking very angry. Parameters per the Apex show everything within range and no major swings but the following days I have had a progression of acros experiencing RTN overnight. Not all coral looks unhappy, there are several acros that look amazing still but several showing retracted polyps and less coloration. I have done 2x 30 gallon water changes on the system (~20%) about 40% total change.
Coral definitely shows improvement on polyps extensions after the water change but seems to only last 12-16 hours before it seemingly starts to decline again. Not sure what is going on or what steps to take, any help would be greatly appreciated!
Quick tank specs,
150g system volume
Salinity: 1.026
Temp: 78
Alk: 8.03 Trident tested (hannah back checked)
Ca: 433 Trident tested (hannah back checked)
Mg: 1311 Trident tested (hannah back checked)
Nitrate: 5.6 Hannah tested
Phosphate: 0.04 Hannah tested
My tank has been up and running for about 11 months or so everything has been running and have been adding a few hand full of acros (have about 25 all small frags 3/4" - 1in") and a few hammers, torch and zoas. All had seemed happy and was seeing some growth in almost all the coral until last Saturday. I have a orange montipora digitata I have had from the beginning that I noticed first with all its polyps retracted and looking very angry. Parameters per the Apex show everything within range and no major swings but the following days I have had a progression of acros experiencing RTN overnight. Not all coral looks unhappy, there are several acros that look amazing still but several showing retracted polyps and less coloration. I have done 2x 30 gallon water changes on the system (~20%) about 40% total change.
Coral definitely shows improvement on polyps extensions after the water change but seems to only last 12-16 hours before it seemingly starts to decline again. Not sure what is going on or what steps to take, any help would be greatly appreciated!