Dosing Freshly made Salt Mix

[Nick Rose]

I mixed up 25 gallons of new salt and the Mag is reading 1290 and I keep my reef tank at 1350. I recently made Magnesium mix for 2 part maintenance. Its 5 1/4cup Mag Chloride to 2 Cups Mag Sulfate. Can I use this Mag mix to fix the salt mix or do I need to make the Mag mix for general maintenance, which is 7 1/4 cups to 1/2 cup? BRS recent video said in short term it wont be a problem using one or the other but in long term you have to use the correct one for the correct purpose.



The salt I'm using is Aquavitro Salinity. I split the bucket and rolled and flipped the bucket so everything was mixed. It has been mixing for 1 1/2 days no heater. I tested 3 times and one of those times was with a new kit which is Salifert. The readings were 1260, 1290, 1275. I then mixed a 1 gallon mix and that test at 1290. The salinity is 35ppt.

 

[Skydvr]

I can’t speak to those products specifically, but my Mg suppliment is magnesium chloride hexahydrate. I raise the magnesium in fresh mixed salt water with it. Any magnesium chloride product will raise salinity some. I belive that the magnesium sulfate is to offset the salinity creep that happens from dosing magnesium salts, but I could be mistaken.

There isn’t much difference between dosing the salt water to match tank parameters and doing a water change than dosing the tank to bring parameters up to match. It would be better to match parameters before the water change as far as I am concerned.