PDA

View Full Version : Alkalinity in IO salt

argileh
06-23-2007, 09:38 PM
Just tested alkalinity in a freashly prepared batch of Instant Oceansalt using RO/DI water, at 1.026 SG. Using a Salifert kit I am getting 14.5 dkh. I don't think it is extemely high but thought I'd check what other's get.
Doug
06-23-2007, 09:50 PM
I just measured mine that was mixed yesterday. I add magnesium and a small amount of calcium also. The alk. in mine was 10.6dkh
PoonTang
06-23-2007, 09:57 PM
I am getting Cal 340, Mag 1100, Alk 3.4 meq/L
argileh
06-23-2007, 09:59 PM
I should have mentioned that the Calcium is at 370 ppm, Mg 1230 ppm
christyf5
06-23-2007, 10:10 PM
Ca 380ppm, Alk 9.6 dkH, Mg 900 at 1.026 SG

Nice to see its so consistent :rolleyes:

What test kits are you using argileh? I was told that IO salt is deficient in magnesium and currently I'm having difficulty in my tank getting my levels up.
argileh
06-23-2007, 10:17 PM
Ca 380ppm, Alk 9.6 dkH, Mg 900 at 1.026 SG

Nice to see its so consistent :rolleyes:

What test kits are you using argileh? I was told that IO salt is deficient in magnesium and currently I'm having difficulty in my tank getting my levels up.

All tests with Salifert kits. My Mg is on the low side so I have to up it. What method are you using
marie
06-23-2007, 11:38 PM
All tests with Salifert kits. My Mg is on the low side so I have to up it. What method are you using

I have read of issues recently with some salifert alk test kits reading high. You might want to check out some of the threads in the salifert forum on reefcentral
That said even if you do have a bad test kit there seems to be no recourse at the moment because Habib (and therefore salifert) have appeared to have vanished off the face of the earth
christyf5
06-23-2007, 11:44 PM
All tests with Salifert kits. My Mg is on the low side so I have to up it. What method are you using


I'm using salifert kits too. Weird.
marie
06-23-2007, 11:45 PM
Never mind I see Habib is back on RC today :mrgreen:
PoonTang
06-23-2007, 11:52 PM
Im using Seachem for Mag and Alk. Its nice because it comes with a bottle of calibration fluid for the Mag so you can check and see if your titrant is still accurate.
argileh
06-24-2007, 12:56 AM
I have read of issues recently with some salifert alk test kits reading high. You might want to check out some of the threads in the salifert forum on reefcentral
That said even if you do have a bad test kit there seems to be no recourse at the moment because Habib (and therefore salifert) have appeared to have vanished off the face of the earth

I am aware of the Salifert Alk test issues. I think my kit is fine as it is giving me logical results when I test the main tank
midgetwaiter
06-24-2007, 10:41 AM
My defective sailfert alk test read a little high on the tank water and just plain stupid high on freshly mixed water. I'm not sure why there was a difference.
Doug
06-24-2007, 01:46 PM
All tests with Salifert kits. My Mg is on the low side so I have to up it. What method are you using

I mix 37ml magnesium first, let it mix for awile, then add about 3/4 tsp of calcium and mix for the rest of the day, then add salt. I,m currently using Ben,s, {chemmaster}, additives.