Smitty
Reef pro
What's up guys, just wanted to share my experience with you all. I ordered a bottle of calibration fluid from marinedepot.com last week to double check my salinity level. I usually calibrate my refractometer using ro/di water and my salt level is always 1.026...but today, I calibrated my refractometer with the calibration fluid and found my tank salt level to actually be at 1.030!!! :shock: I'm doing a water change right now as we speak to start bringing that salinity down.