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SeaFurn

White Fuzz is Back - What is it?

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SeaFurn

This whitish wispy algae is back covering my rocks.  Any idea what kind it is and what to do about it?  CUC (snails & hermit) doesn't seem to help. 

 

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Lovemyreef2015

It looks to me like you are dealing with Chrysophytes. The best way to deal with it is by reducing the amount of dissolved silicates and other nutrients. 

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Amphrites

Silicates yes, but ime chrysophytes actually prefer low-nutrient situations.

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SeaFurn

Silicates from water? Tank is BB. I use RODI to make water (0 TDS). 

 

Nutrients are low but I do feed the corals coral frenzy and phyto regularly. 

 

HELP! 

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Amphrites

Could be they're using up amino acids in the coral foods, if your nutrients are low you will probably have to raise them in order to control the outbreak. You'll also need to manually-remove some in all likelyhood, Peroxide melts chrysophytes quite well but I wouldn't dose the tank with low nutrient-levels since it likely can't handle the reduction in diversity. You could remove one rock at a time and do a dilute-peroxide application and rinse with tank-water and/or scrub before reintroducing it, clean everything up slowly over the course of a few weeks.

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