Salinity

[MadReefer]

As stated been having issue with my tank and did a 25g WC two weeks ago and 10g WC this week. Parameters are in range except for Phos at 1. I added what little Rowaphos I had left to try and reduce it.
On R2R I posted as well and someone said to salinity. Well finally borrowed a new hobbyist refractometer and compared the reading to mine and now very confused.
Mine read 1.026 and the other read 1.017. That a huge gap so not sure if mine is wrong or the other person's. I tested both with filtered water and they read zero.
What's next? Test with another refractometer? Go by the new one? Toss in the towel and cut my losses....LOL

Any help appreciated.

Phos - 1
Nitrate - 10
Calc - 350, I bumped up dosage
Alk - 9.5
Mag - 1350

 

[The Gooch]

Tropic Marin glass hydrometer is the one you trust. Standard refractometer will steer you wrong, especially when several different bottles of calibration fluid will read differently. Usually when somebody starts doing regular ICPs, they become aware of this. No matter what your opinion on what is best, it’s always best to have a second measure, and I would use the glass hydrometer to keep the other device honest.

 

[myrjon]

mark i have a Milwaukee tester .if you want to bring to test.not going to shore till oct 3