why does torch turn to white from brown color?

kvans

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My two hammers as well as my torch coral have all bleached over the past few days - going from their normal green/purple to a white color, while all the other corals are fine. Could be a temperature issue as my tank has been running really hot these past few days and im struggling top get it down without having a chiller.

Just a theory though. Maybe a more experienced reefer could shed some light.

Hows your tank temp? Have you added new light recently? How are your parameters looking?
 

Aquatic czy

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It makes sense as i moved to another house and its way hotter in the house my tank is running round 29c which is hot.
 

Aquatic czy

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Water chem as far as tested is fine eg nitrates fhos and alk is good maintaining 8.5 which i think is perfect so only thing that changed was temp
 

kvans

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This makes me think high temp is the issue. Cant be sure though.

As a solution:

If you dont have a chiller, running a PC fan pointed over the top of your tank or sump so it blows across the water will help reduce the temp. Just note that this will increase evaporation thus consume more RO topup. Im doing the same to my tank this afternoon.

Another quick option is to freeze water bottles and then float them in the sump. This isnt ideal but it works as a quick temporary fix until you can sort out a proper temp control method.
 

Aquatic czy

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Yea sure its temp i will try a fan on a timer and see what happens hope it makes a difference as chillers are expensive
 

viper357

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High temp can definitely be a cause of coral bleaching, it's one of the factors that causes bleaching on the coral reefs around the world.

coralbleaching-large.jpg
 

Aquatic czy

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Wow ok thats intresting gees here comes the fan thinking i must put a timer on it to let it go on round 12 and stop at 6 times when its hotest what u guys think
 

Aquatic czy

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Thanks guys fan works great droped my temp by 2deg which im suprised to have droped so much but yea evaporation is a lot more.
 

viper357

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Good to hear, it may take a while but the Torch should recover. :)
 

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