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jaegers_reef

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Hey guys, I've dealt with amphidinium before in my nano but am currently going through some sort of bloom in my new 93. I don't believe they are amphidinium but couldn't find anything that matched. What do you guys think? I pulled these samples from the sand bed, it came off like a thin piece of brownish film.
20190812_205009.jpg

20190812_204943.jpg
 

melanotaenia

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not sure what the images are showing but if you describe it as a film on the surface of the sand and it has a brown color it is likely cyanobacteria.
 

melanotaenia

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TY! Dealing with the same thing!
manual removal works well for the large areas that develop on sand bed. New tanks often suffer from it but it goes away over time; established tanks with cyano problems should address what underlying water chemistry may be causing it to continue to proliferate.
 

vetteguy53081

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Siphon away as much as you can and do a Very low light or blackout (tank lights off 0 for 3-5 days. Add 1ml of hydrogen Peroxide per 10 gallons daily and you will see it go away.
 

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