Help with coral Biocube 32

[Turtle Dawg]

Brand new Biocube 32. Have the filter rack, skimmer. Whole nine yards. Temp 78 with a small wavemaker. My coral does fantastic for a week and then they die. So after that I was scrambling trying to save them. I messed up on my dosing pump and basically overdosed on Alkalinity and Magnesium. I'm feeding Reef Roids and AB+. After pretty much the whole tank died, my nitrates and nitrites are way up even though I did a half water change. I had gotten 10 blue leg hermits but I don't see many of them, so I don't know if the others decomposing somewhere or what. Are the nitrates and an nitrites high because there's something decomposing? How do I reset my tank and why are the corals doing fantastic and then dying? Appreciate ANY help at all.

 

[thomas_neil]

Brand new Biocube 32. Have the filter rack, skimmer. Whole nine yards. Temp 78 with a small wavemaker. My coral does fantastic for a week and then they die. So after that I was scrambling trying to save them. I messed up on my dosing pump and basically overdosed on Alkalinity and Magnesium. I'm feeding Reef Roids and AB+. After pretty much the whole tank died, my nitrates and nitrites are way up even though I did a half water change. I had gotten 10 blue leg hermits but I don't see many of them, so I don't know if the others decomposing somewhere or what. Are the nitrates and an nitrites high because there's something decomposing? How do I reset my tank and why are the corals doing fantastic and then dying? Appreciate ANY help at all.

How old is the tank? My first thought is it wasn’t cycled completely and nitrites killed them.
My next thought is lighting might not be strong enough. Did they turn brown and shrivel up when they would die?
Do you have any fish?
I would do a full water change and get 2 clowns to cycle the tank for at least 2-3 months or until nitrites are at 0.

What where your parameters at?

 

[homer1475]

Age of tank? How was it setup? Dry rock, live rock? How did you cycle it?