Algae ID

TeeSquared1214

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At first I thought this was cyano but think it could be dinos because it recedes to an extent at night? Looks like a slimy film that is covering sand and sometimes the rocks. I believe that some of the brown/green is hair algae and my lawnmower blenny and pincushion urchin seem to have dented it pretty well.

Any guesses? Photos taken with two AI hydra 32 HD lights with all colors at 100%. The red/brown algae on the sand is my main concern. It can also be seen on the rocks in some places.

My parameters:

Phosphate: 0
Alkalinity: 9dKH
Calcium: 420
Magnesium: 1150
Nitrite: 0
Nitrate: 0-5
Ammonia: 0
PH: 8.0-8.3
Salinity: 1.024

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sfin52

So many pedestrians so little time
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Nutrients imbalance and watch out for dinoflagellates
 

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