Algae ID Please help

AScarbro14

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Went on vacation for a week and when I came home this algae was all over my tank. Prior to leaving tank was spotless. Performed a water change and manually removed as much as I could but almost a week later it is coming back.

IMG_5300.jpeg IMG_5299.jpeg IMG_5301.jpeg
 

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I am having a hard time telling from the photo, but is it slimy stuff with bubbles in it or dusty stuff (or something different)
 

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It’s like a brown hair algae on the rocks and a slimy type on the sand
On sand either diatoms, cyanno or dinos, probably diatoms. Either way manual removal, less light and time will remove them. On rock diatoms, hair algae or dinos. Zero po4 would make sense if it is dinos
 
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AScarbro14

AScarbro14

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On sand either diatoms, cyanno or dinos, probably diatoms. Either way manual removal, less light and time will remove them. On rock diatoms, hair algae or dinos. Zero po4 would make sense if it is dinos
Tomorrow is water change day so I will remove it again and vacuum the sand bed.

I was gonna do 3 days lights out but I worry about the corals.
 

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Tomorrow is water change day so I will remove it again and vacuum the sand bed.

I was gonna do 3 days lights out but I worry about the corals.
Coral should be fine. They're naturally equipped to be able to go awhile without light. I'd say a week is pushing it but 3 days is no problem
 

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Went on vacation for a week and when I came home this algae was all over my tank. Prior to leaving tank was spotless. Performed a water change and manually removed as much as I could but almost a week later it is coming back.

IMG_5300.jpeg IMG_5299.jpeg IMG_5301.jpeg
Looks like dino but often you can see this and its not unless you verify with microscope.
How are you testing phosphate? If truly zero, when we see zero readings, automatically we assume this is the cause but by the time you see zero numbers, its because the dino has consumed the po4 and no3 and are multiplying and this biological deficiency is causing the dino structure
 
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AScarbro14

AScarbro14

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Looks like dino but often you can see this and its not unless you verify with microscope.
How are you testing phosphate? If truly zero, when we see zero readings, automatically we assume this is the cause but by the time you see zero numbers, its because the dino has consumed the po4 and no3 and are multiplying and this biological deficiency is causing the dino structure
Testing PO4 with Tropic Marin PO4 Pro kit
 
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AScarbro14

AScarbro14

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Well algae is back. My buddy let me use his micro scope and I was able to get a picture. Anyone have any ideas?
 

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