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Keep testing every couple of days. For reference I dose 2ml/day for my 200g system. So don't dose more because the number is not coming down. A member here @saltkreep88 suggested microbacter7. You might want to give that a try as well.
Jason Fox Leptoseris has a very nice orange color. Many Zoas will give you nice colors of all kinds. Also Superman Monti, or Jason Fox Violet Orange will give you a very nice pink color.
I am not exactly sure what chemi pure blue is. It seems to be an enhanced version of activated carbon. It should not remove nutrient significantly so you can leave it in. I do not run activated carbon on a regular basis. Only occasionally to remove the yellow color from the water (like once...
You're running too many things in your tank so my first suggestion is to remove purigen, phosguard and chemipire. Actually none of them remove nitrate. Leave the tank alone for a few days then we can think about nutrient export.
If you have calibrated then your tank water is not 35ppt. It is close to 1.021 SG. Why bring your hydrometer into this? And how do you know the hydrometer is accurate?
Refractometers are low tech equipment and it's pretty hard to have a bad one. Make sure it's calibrated to 1.0264 and try to match that with your tank water. If you don't have calibration fluid just get a bottle of salt water from a fellow hobbyists. To increase salinity, add some salt water and...