Low Magnesium... - Page 2

kzziboy · 09/19/2012, 11:31 AM

Wow. That would explain it IF my hydrometer is off by that much.
Again, Thank you for that info.

downbeach · 09/19/2012, 12:02 PM

Well, refractometers can be off too, but they can be calibrated. I use a hydrometer at my mixing station to give me a "rough" idea when adding salt to the RO/DI water, but, before I use it, I always adjust using the refractometer to match my DT's water.

09/19/2012, 11:31 AM	#26
kzziboy Registered Member Join Date: Feb 2009 Location: Spearfish, SD Posts: 187	Wow. That would explain it IF my hydrometer is off by that much. Again, Thank you for that info. __________________ kzziboy Current Tank Info: 75 gallon. 4-48" T5's 2 10k and 2 actinic

09/19/2012, 12:02 PM	#27
downbeach Registered Member Join Date: Nov 2006 Location: Smyrna, Delaware Posts: 3,767	Well, refractometers can be off too, but they can be calibrated. I use a hydrometer at my mixing station to give me a "rough" idea when adding salt to the RO/DI water, but, before I use it, I always adjust using the refractometer to match my DT's water.