Urgent Help Need for Salifert Ca Test Kit

[joachimsim]

Guys I bought a Salifert Ca test kit that day. but I am not sure if I am using it right.

Ok

1) The 5 ml syringe used to draw 3 Ml of tank water DOES NOT take into acct the pointed part of the syringe which means u will always take more than 3 Ml or 5 ml

2) The 1 ml syringe uses the long plastic attachment which has the same problem. When the instruction asks you to read abv off the black piston , do u take into account the white plastic part or NOT?

I measured my tank Ca level for a 220 Litre tank running less than 2 mths with only 3 Hard Corals, Hammer, Goniapora Jewel and another Goniapora I think , but I got I think 360 Ppm or less..( can't remember ) My Salt was Red Sea and there was a water change of 20 litres using Marine Environment Top Grade Salt.

Is it possible that my Ca level has dropped so much ?

HOw do I dose Kalkwasser for the Ca level to appropriate levels.?

I have a handful of Kalkwasser without instructions.

[FuEl]

Hold the syringe with the plastic tip pointing downwards, you read the readings from where the lowest part of the black piston is touching.

Don't just drip kalk. Best you test your kH too. Raise it to the desired level before adjusting your calcium levels.