Diatoms or cyano

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doubled in size now
 
Siphoned most of them out today into filter sock. Replaced water. Going to retest water tonight.
 
2/23/20

1.025 sal
420 ca
8 alk
8.0 ph
0 po4 (api)
0-5ppm no3 (api)
 
Hanna phosphate came in the mail. No excuses now with API test
 
Phosphates at .12
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If they are just on the sand, I agree with Saltyhog, Amphidinium dinoflagellates. Raise n03 to 5 to 10 and keep po4 between .03 & .08 . After a while they should fade. Some reefers dose silica to bring on a diatom bloom which will compete with the Dino’s to finish them off. It will take a month or so but the process does work. Get a microscope, they are handy for times like this.
 
If they are just on the sand, I agree with Saltyhog, Amphidinium dinoflagellates. Raise n03 to 5 to 10 and keep po4 between .03 & .08 . After a while they should fade. Some reefers dose silica to bring on a diatom bloom which will compete with the Dino’s to finish them off. It will take a month or so but the process does work. Get a microscope, they are handy for times like this.
I’m at .12 already
 
Phosphates up to .24 now....probably getting too high
 

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