Reefcrystals users, need some input please.

[chrisT]

I have a batch that is mixing up to about 11.5 to 12.0 Dkh at. Is this normal?

 

[cfazi]

when i use it thats around what i get some are around 10 some are around 13 but that seems normal in my uses of it

 

[washingtond]

@chrisT wrote:

Yes and should not be a problem.

 

[JHawk82]

yes reef crystals always have a high dkh when I test, never had a problem with it.

 

[sublime-1]

I just made a 30G batch last night and it's also mixing at 10.8 - 11.2 dKh
350 calcium, and 1200 Mag.

So, unfortunately that's one of the knocks on IORC, is that it has always been low on Calc/Mag.


But, It's pretty consistent otherwise. I almost always nail the SG when I mix a batch. I have a receipt sheet with #/scooops per gallon to reach a given SG.

 

[washingtond]

@sublime-1 wrote:

350 for calcium is low for RC and what I would expect of IO, I measure around 430 ppm on my mixes of RC. What test kit are you using?

 

[chrisT]

Mine mixed up to 410 ppm.

 

[joelq]

If you're seeing low numbers from RC, make sure you're mixing to 1.026, and assuming you're using a refractometer, make sure it's calibrate to 1.0264 as well. RC at 1.0264 should have Ca in the 400s and Mg in the 1300s - at least that's my experience.

 

[washingtond]

Correct I mix mine to 1.026 and have good calcium numbers.

 

[BigJay]

@sublime-1 wrote:

I'm just about to switch to using RC, can you please post that receipt sheet?

For the price it can't be beaten.