Salinity Issue

So trying to recorded my salinity after someone added saltwater to my tank without talking to me. Removed 5 gal replaced with fresh RODI below is my current read. What would you suggest I do to get it to 1.025/1.026?

My corals won’t open my tank is 1.027 whyyyy

How much score do u guys give for my reef tank in a 100 score?

Equipment:

BOYU WG-310 (impeller modified for better airflow) (protein skimmer)

Aquael FZN PRO 700

Yee submersible pump (1000L/H) (used as wave maker)

18w reef light + 5.2w yikeda reef light

Some random desk fan modified as cooler

2in1 thermometer+salinity meter

Fish and coral inside:

Favia

Mushroom

Damselfish

Ocellaris clownfish ×2

Thickness of the sand

1~5cm

Salt used: Vastocean basic ocean sea salt

Salt parameter:

CA~ 400-450MG/L

MG~ 1250-1350MG/L

KH~ 7-9 d°KH

(The rest.. Idk)

Water box 100.3

Can you add salt directly out of the bag to your tank?

I HAVE FIXED MY PARAMETERS ISSUES, i got it checked at my LFS today and it was… not great to say the least, so i did a massive water change and checked it with the new gear i bought and i fixed atleast what i could check

PH: 8.0

Salinity: 1.025

nirate: 0

thats all the parameters i checked so far because everything else was either untestable at home at the moment for was good enough

i should be able to actually start having some animals in the tank soon

probably next sunday i will buy some hermit crabs and emerald crabs, but im not sure

Love spending almost $70 in salt for this to happen

IS A GLASS HYDROMETER ACCURATE

I've been using mine for a year and a half

I was looking to get the Tropic Marin High Precision Hydrometer.

Struggling with something, doing 25% water changes every week nite phos ammo all 0 ph 8.2 salinity 37.5 I get this in less than 3 days

What salt brand do you guys recommend? My LFS gave me 10 gallons when I first started my tank and the levels were way off

Totally new to this, so a little confused: I came home after three days and my water level was down. I checked salinity and it had increased to 38 (from 35), so I added 2/3 gallon (3L) of RODI and the salinity didn't go down! What did I do wrong?

Question, I’m a beginner and don’t have a RO/DI machine yet. What should I top off my saltwater aquarium with water that has evaporated? Treated water where I add some drops of water conditioner or distilled water?