Frag help!

[emilyruthwinsor]

I got all of these these coral frags in October 2023 and they were all thriving, bright and happy. A few weeks later I had a big alkalinity spike, killing most of my fish and a few bigger corals.

Everything got sorted, and my LFS housed the remaining frags and fish. Since then I’ve had a bit of new tank syndrome which has now ended and my corals just seem to be not growing and declining every day.

Zoas haven’t opened since before Christmas and are growing algae.

Red Plating Montipora went half white after spike now completely lost all colour and keeps growing algae.

Green Stylo, still angling itself towards light but no sign of other life and keeps growing algae.

Candycane Trumpets seem to be doing okay but keep receding and coming back as and when they wish.

Purple tree like coral (can’t remember name) is fine!

Green little frag (can’t remember name) seems happy just not growing at all!

Levels all steady and healthy now.

Any tips on how to revive these and regain brightness of these corals would be hugely appreciated.

 

[Nate Chalk]

I recommend bumping phosphate to 0.10 and nitrate to 15

Testing weekly and adjusting

 

[Nate Chalk]

My tank has ran at 0.3 and 50 nitrates and come back down on its own. Acropora all fine.

You'll grow some algae and bacteria colonies to adjust. Remove the algae manually or with cuc

 

[Manpeckz]

Coral has algae too. We gotta grow some of it

 

[kevgib67]

Haha, thanks! The storm moved further south, so I'm only getting about two inches where I am. Sometimes nature is so boring .

Last time I was in Boston it was for my father’s retirement party at The Garden. I don’t know how people drive around in that city!

 

[JAS927]

I don’t think alkalinity was the problem in this situation. My alk is currently at 15 (usually 8) and everything is thriving as usual. What was it that you considered it to be a spike?

 

[emilyruthwinsor]

Fab thanks for all the advice everyone! I’ll get my nitrates up! Whilst on the subject can anyone ID the purple tree like coral?

 

[steveschuerger]

Fab thanks for all the advice everyone! I’ll get my nitrates up! Whilst on the subject can anyone ID the purple tree like coral?

A mostly dead Stylophora.