What is this?

[AlexG818]

Can anyone tell me what this is and how to get rid off it? It’s a 160 total water volume. Numbers are very stable testing every week.
View attachment 20260328_170324_2229A534-0D49-425B-A8E4-102EDCE9F486.mov

 

[Tahoe61]

Looks like Dino, you need microscopic ID to be sure.

The sooner you cough up chemistry the sooner troubleshooting begins.

Nitrates
Phosphate
Alk
Cal
SG

Oh and age? How long has it been like that?

TIA

 

[AlexG818]

Looks like Dino, you need microscopic ID to be sure.

The sooner you cough up chemistry the sooner troubleshooting begins.

Nitrates
Phosphate
Alk
Cal
SG

Oh and age? How long has it been like that?

TIA

The tank is new but the water rocks and everything is a year + old.
Nitrate -0.1
All-9.5-9.7
Cal- 405
Phos- .03
Mag-1410

SG?