[Pomme]

dkh lowering?

Okay i did my weekly test tonight.

Here are the results from a week ago:

Temp - 27
Salinity - 1.025
pH - 8.1
Ammonia - 0
Nitrite - 0
Nitrate - 2.5
Calcium - 440
dKH - 12.6
Mg - 1500
Strontium - 8
Phosphate - 0

And tonights results:

Temp - 27
Salinity - 1.025
pH - 8.1
Ammonia - 0
Nitrite - 0
Nitrate - 2.5
Calcium - 440
dKH - 9.9
Mg - 1500
Strontium - 8
Phosphate - 0


so all is well except the dKH which has fallen considerably. So i have added some Kent dKH and will add some more in small doses to bring the level back up.

The equipment i have is a ca reactor and kalk reactor, could this be something to do with the reactions for the kalk reactor?

All help very appreciated,

a

[Ninong]

Alkalinity is just a measure of the ability of the water to buffer rapid drops in pH. Lets call it a safety net or a security blanket. Natural seawater has an alkalinity of 6-7 dKH, so a reading of 9.9 dKH is still quite robust and nothing to be concerned about. I like to maintain mine between 10-12 dKH but Delbeek & Sprung recommend a range of 7-10 dKH.

[Pomme]

coolill stop worrying about it thenand see where it ends up

thanx for the help