To help set your domestic appliances, the water hardness in different units is: 265 mg/l :Calcium Carbonate 106 mg/l :Calcium 18.444 ?C :Degrees Clark 26.5 ?F :Degrees French 15.052 ?dH :Degrees German 2.65 mmol/l :Millimoles
This is what comes up on Anglian water page.
I have had 'white fluff' appear in the last few days on the gravel, and on some ornaments and on my air tubing. Also, it looks like some algae is forming on the glass. Should I leave the lights off?