Instant Ocean Salt Users

[Billybeau1]

And only IO users, please.

I'm doing a little survey of what calcium numbers IO users are seeing in Instant Ocean these days. I thought it ran around 340-350 for the longest time. I recently purchased a small box and tested @ 35ppt and got 380 (with 3 different kits).

So please, fellow RC'rs help me out here. Just answer four questions for me.

1. S.G. mixed @
2. What method of testing s.g
3. What brand calcium test kit
4. Results - Calcium ppm

Thanks all.

[ek9vboi]

1. 1.025
2. Refractometer
3. Salifert Calcium
4. 350 ppm

[mwwhite]

1. 1.0265
2. Refractometer
3. Aquarium Pharmaceuticals
4. 360-380 (one drop difference, which could be testing noise)

[Billybeau1]

thanks guys. mw, thats exactly what I got.

Anyone else ? Jonathan I know you use IO, what are you getting these days ?

[kau_cinta_ku]

1. 1.025
2. refractometer
3. salifert 360 ppm
hagen 360 ppm

i also have the IO test kit but haven't tested newly made salt water also my AP test kit will be here thursday

[Stanton]

1. 1.025
2. Lab grade density meter
3. Salifert Calcium
4. 360 ppm

[NO1B4ME202]

1. 1.025
2. Refractometer (2 of them)
3. Salifert Calcium
4. 350 ppm

[Billybeau1]

Thanks guys. keep em coming.

[TCU Reefer]

1. 1.026
2. Refractometer
3. Salifert
4. 350 ppm

[crispyreef]

1. 1.025
2. Anton Paar, DMA
3. Aquarium Pharm
4. 350

[Henry Bowman]

1. 1.026
2. Refracto
3. Salifert
4. 360

[serum153]

1.026
Refractometer
Salifert/Aquarium Pharma
340

It's been consistent throughout the 160g bucket

[Billybeau1]

Pretty much what I expected.

Anyone else ?

[phragman53]

1. 1.025
2. Refractometer
3. Seachem
4. 350 ppm

[J. Montgomery]

1. 1.026
2. Refractometer
3. Salifert
4. 365ppm