Need help identifying a dinoflagellate

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Ronk1109

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Hi everyone need a little help first identifying a dino and then a best way to combat it. I was running my nutrients way lower than I should have. No3 was 1.1 and Po4 was .02
1A0E6469-B798-4D63-9483-E19D12E053BA.jpeg
A12A1665-F14D-419E-90EF-68F1AD412F46.jpeg D850DD11-8470-4F90-B147-C5368FDE27C1.jpeg
 
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Ronk1109

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Thank you. I have that picture list. I’m going crazy trying to match mine. A few of them look so similar and I don’t want to make the wrong decision
 
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Not sure if I loaded it in the slide correctly. Hopefully I did. First time using a microscope
And it was plenty good to ID the dino. Great job for a first shot.
I was just explaining why the cells appear different than that pipe normally does in pictures posted here.
 
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Ronk1109

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this is ostreopsis. Some of the cells are smushed and the contrast in the image is weird.
Not sure if I loaded it in the slide correctly. Hopefully I did. First time using a microscope
And it was plenty good to ID the dino. Great job for a first shot.
I was just explaining why the cells appear different than that pipe normally does in pictures posted here.
and after going back and looking at another sample a lot of them are turning in a small circle which definitely looks like ostreopsis. Only thing is they do not completely disappear at night. Could it be a mixture of different types? And I have a 57 watt aquaUV running around 1500 gph. Should I slow that down to less than 1000? It’s a 180 with a 40 breeder sump.
 

The0wn4g3

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If it's not a type of dino that goes into the water column at night the UV sterilizer won't help. I have my UV at about 700 gph and it killed off all ostreopsis but not the dinos in the sand.
 
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Ronk1109

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If it's not a type of dino that goes into the water column at night the UV sterilizer won't help. I have my UV at about 700 gph and it killed off all ostreopsis but not the dinos in the sand.
Thank you. I have my uv set wayyy to high gph. I’m going to have to dial it back or get a second one temporarily. I’m slowly going bare bottom so I’m sucking sand out along with the dinos. Hoping that will help.
 

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Ronk1109

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For dino's in sand ive always heard to keep no3 at 5 ppm and po4 at .o5 than dose with silicate, and phyto. Essentially ur causing a diatom bloom that would out compete the dinoflagellates for nutrients.
Thank you. I’ve dosed myself up to no3 8ppm and .08 po4 it goes up and down a little with water changes. I just ordered phyto and brightwells sponge excel so I’m hoping this will all get the job done.
 
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