dead acros

[1reefluvr2]

can any 1 help me figure out what is happening 2 my acros only sum are ok and others are being wiped out fast a sherbert and a rose milli a red planet and a tricolor from vivid i dont have anything wrong water test reads perfect calcium perfect and no amonias ph is between 8.2 and 8.4 i really dont know what could be happening 150 halfcircle tank 200pounds of fiji rock and tonga calcium reactor 2 vortech marines 2.250w metal haylides and a 400w haylide 60 gallon sump and a 1 horse power chiller aqualife uv light . thompson tang pale tail tang fire fish goby i 6line wrasse 1 yellow coris wrasse 1 blue doungen gobie 1 cleaner shrimp i fuse goby 1 mandarin dragonet 1 orange spotted tang and 3 nickle size blue tangs 1 tail spot bleenie 1 rainfords gobie and last but not least 1 marron clown have from chalice to dandrophilias to acroporas and milliporas to blue xenia to leathers and montiporas i just dont know whats going on no additions so i dont have a clue for bugs

[bcrum51]

have you dosed anything recently done anything new to the tank how old are the corals

[three90s&125sump]

There are a lot of things that can be going on.

Is anyone spraying chemicals in the house? Air freshener? Bug spray? Cleaning supplies?

Do you dose anything? What, how much and how often.

How old are your lights? How long do you run them for?

How much water do you change and how often?

Have you made any changes to the system, removal or additions of equipment, animals or did you clean anything?

What skimmer do you run?

Do you use carbon or ferrous oxide?

What's your substrate? How old is it? Have you cleaned it?


have you lost power recently for any amount of time?

Is there any pattern to the death of your corals? Are they grouped together? Are they a specific kind? Are they new? Are they old? Have you recently fragged them? Moved them? Anything else that could link them together?

What are your parameters when measured... Calcium, alkalinity, magnesium, nitrates, temp (include daily variation) and pH (include daily variation).

That should keep you busy for now.