Corals in my new tank BLEACHING

TinnysReef

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WHYYYYYYYY. So I have started a 310 gallon custom tank. It's been running since November. I have 3 Red Sea 160s for lights. They are super bright on 100% and I keep my frags in a 40g breeder with 3 Fluval Sea lights (not the most popular but I've had great luck with them, and they actually have a wonderful app).

So, I thought to avoid stress to the corals I'd but the 160's on acclimation mode, with a starting intensity of only 10% and a 90 day acclimation period. Within 2 weeks, the corals that were not on the sandbed were bleaching. Frogspawn, octospawn, birdsnest took the brunt of it :loudly-crying-face: :loudly-crying-face::loudly-crying-face:

I moved them back to the frag tank. That's been about another 2 weeks and they are SLOWLY getting their colour back.

Could the PAR really be that high on only 8% intensity to cause bleaching? I added Red Sea 90s to my softie tank and had them at 100% from the beginning with no issues. In fact, the softies immediately loved them and started growing like crazy and my bubble tips split within 2 weeks. Before this tank, I used the same 160s on a 300 gallon (that broke) and wasn't nearly so cautious with intensity and didn't have an issue.

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fishguy242

Cronies..... INSERT BUILD THREAD BADGE HERE !!
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hi,how are your nutrient #'s ?
 
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TinnysReef

TinnysReef

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hi,how are your nutrient #'s ?
I'm actually working away from home right now so I can't get numbers right now. But, so far I have no fish in the system. Just some hermits, snails, and shrimps. I feed them pellets once a day and have an autofeeder going when I'm away.

There hasn't been an "ugly phase" yet. Just a small amount of brown algae on the glass has started. Do you think it's still just too soon? Cycle not done yet?
 

fishguy242

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Good possibility,let us know params when you can... :)
 

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