I have a Ca Lamotte test which is OK !
I saw a Sera one stating for See water...
Should it work also on Fresh water ?

Regards,

Philippe


"Aqua" wrote in message ...
| You can subtract Ca from GH (normally Ca+Mg)...
|
| Sorry guys, How do you measure Ca? Do you have any test kit for Ca?
|
| --
| Thank You
|
| Dominic
| http://www.dlink.org/aqua
|
|
|