Trouble with chalice, leptastrea, favia

[GOSKN5]

For the last few months I have had an issue with chalice, leptastrea, favia etc...

My tank is mixed reef and has tons of montipora, shrooms, zoas, birdsnest, softies, euphyllias, etc.. all doing fine and growing...

But in the last month I have lost 2 chalice, one one the way out.. losing a portion of a nice favia, leptastrea frag, acan enchinata... I also noticed a small spot on my space invaders pectinia.. which I have had for almost a year...

My parameters are all stable and in order
Alk- 9
Cal- 450
Mag- 1400

Using red Sea test kit and dosing 2 part daily..

Running 4 t5 bulbs with an ice cap ballast and a 150w blue LED strip.. 120 gallon tank.. all corals affected are in the lower half of tank... (pectinia about halfway up)...

Any thoughts?? Here are some bad pics of the affected corals..

FTS

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[captjab]

I can't answer your question, but that is a beautiful tank.

 

[GOSKN5]

Haha thanks.. about to be a little less beautiful if I keep losing pieces

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[nereefpat]

Very beautiful indeed!

Is the tank short on nutrients/fertilizer? It looks like you have some non-photosynthetic pieces. It might be worth doing some spot feeding for the favia and leptastrea if you aren't already.

 

[GOSKN5]

No NPS that are visible in the pic.. there is a small NPS gorgonian frag in there tho..

What's the best way to see nutrient levels? Measure nitrates?

I feed frozen once a day.. there are 18 fish in the tank.. all are small with the chromis being by far the largest...

It is barebottom, running gfo, filter socks, big skimmer, and weekly water changes.. but the glass needs cleaning twice a week or so...

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[nereefpat]

I just assumed some of those gorgs and seafans were nps, and you were feeding them.

Anyway... Yes it might be worth testing NO3 and PO4 levels, and doing some spot feeding.

That's my only guess. Good luck

 

[steallife904]

to much light??? maybe move in a shaded area. I also suggest shutting off the gfo reactor for a bit. I had similar issues one time and when I shut the gfo reactor down they came back. Seemed I was removing to much with the gfo reactor.

 

[organism]

I had a similar issue when my nitrates and phosphates went to 0, would be worth testing for those... Feeding more and dosing potassium nitrate to keep nitrates at 2-5 saved my tank.

 

[xanthurum]

Just looking at your tank I'm gonna guess that it's just too clean. Some of your corals look a bit pale which would indicate that you don't have enough nitrate and phosphate.

 

[GOSKN5]

This certainly could be a factor... I have noticed several of my euphyllias are pale...

I think I am so scared of an algae problem I am a little OCD about feeding and cleaning etc...

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[bacon5]

Hard to tell from the pics, and likely something that you already thought of, but just in case, are there any corals that could be stinging the others? Have you noticed any sweepers at night? Sweepers on euphyllias can get surprisingly long.

As previously mentioned, gorgeous tank

 

[GOSKN5]

Thanks.. nothing near these particular corals

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