Carbonate Hardness

[Sammydog]

This will probably be a very simple question.

My test kit for Carbonate Hardness tests in ppm. How do you convert this to kdH and what sort of reading would we be wanting in terms of ppm or kdH. I can't seem to find anything to point me in the right direction.

My tank seems to hover around 80ppm, but I don't know if this is high/low or spot on.

 

[BL1]

Ideally between 125-200 ppm, so you're definitely low.

Reef Aquarium Water Parameters by Randy Holmes-Farley - Reefkeeping.com

 

[texreefer]

multiply by .056 to get to dKH



you appear to be at 4.48dKH currently

 

[Aquarian]

Divide your ppm by 17.9 to get your dkh
Natural sea water is 5 - 7 dkh

 

[Sammydog]

Awesome, thanks for the help.

I know in the past it has tested low in the shop and I had a feeling it was low, but didn't want to go to try and correct anything until I knew.