74ppt on salinometer!!!

Roberthein · 04/03/2020, 01:55 AM

So i finally got some clean 35ppt water from the store, and thought finally can move on with the project, but no... i have this digital salinometer, brand new.
When i test its around 74ppt, clearly it needs calibrated, if inunderstand any of this correct? But the screw that I supposed to wind it down to 35ppt, wont go any further down than 74.2ppt 🤔

Have I misunderstood something or what is going on?

Video: https://www.dropbox.com/s/3o2si6usm0...54.07.mp4?dl=0

Sk8r · 04/03/2020, 10:58 AM

Ow. I use the other scale, btw. 1.024. Go back to the store and get them to test your water with THEIR instrument, then hand them yours and get them to calibrate it. It's a reasonable service for a new customer.

04/03/2020, 01:55 AM	#1
Roberthein Registered Member Join Date: Mar 2020 Posts: 9	74ppt on salinometer!!! So i finally got some clean 35ppt water from the store, and thought finally can move on with the project, but no... i have this digital salinometer, brand new. When i test its around 74ppt, clearly it needs calibrated, if inunderstand any of this correct? But the screw that I supposed to wind it down to 35ppt, wont go any further down than 74.2ppt 🤔 Have I misunderstood something or what is going on? Video: https://www.dropbox.com/s/3o2si6usm0...54.07.mp4?dl=0

04/03/2020, 10:58 AM	#2
Sk8r RC Mod Join Date: Feb 2006 Location: Spokane WA Posts: 34,628 Blog Entries: 55	Ow. I use the other scale, btw. 1.024. Go back to the store and get them to test your water with THEIR instrument, then hand them yours and get them to calibrate it. It's a reasonable service for a new customer. __________________ Sk8r Salinity 1.024-6; alkalinity 8.3-9.3 on KH scale; calcium 420; magnesium 1300, temp 78-80, nitrate .2. Ammonia 0. No filters: lps tank. Alk and cal won't rise if mg is low. Current Tank Info: 105g AquaVim wedge, yellow tang, sailfin blenny,royal gramma, ocellaris clown pair, yellow watchman, 100 microceriths, 25 tiny hermits, a 4" conch, 1" nassarius, recovering from 2 year hiatus with daily water change of 10%.