Originally Posted by Betowess
Thanks alot for the info, Stu. Do you know the ratio of MG to CaCl2?
Think most people use a 3:1 ratio of calcium to magnesium.
Originally Posted by freeflyer
Ok I just found the tap report online heres the hardness Im not sure which is which or how to convert to degrees. these are the median levels
Alkalinity as CaCo3 99
harness, totall, as CaCo3 131
hardness,calcium, as CaCo3 105
hardness, mag, as CaCo3 29
totall dissolves solids 169
How are these levels for chlorine? Close to normal, should a normal dose of declor be enough?
chlorine free .06
chlorine total 1.32
Well, I don't know any scientific data of what levels of choline are considered relatively "safe" for fish, but I would put in an educated guess that a dechlorinator has
to contain enough Sodium Thiosulphate in the recommended dose to neutralise what could possibly be the top end limit of chlorine levels for human consumption in the tap supply, just to be sure. If there's more than this level in the supply, the water company gets busted.
i.e, I wouldn't worry about chlorine removal. The issue would only arise if you wanted to reduce
the amount you add and fine tune to try and conserve your supply, but this could get risky if you take it too far.
Just for reference, here's my chlorine from water report...
Free Chlorine = 0.13
Total Chlorine = 0.17
Strange how the two values in your supply are widely different and mine are relatively close.
Now, to the hardness...
To obtain degrees of hardness from ppm (mg/l), you need to multiply by 0.056.
GH (total hardness) is 7.336 (131ppm x 0.056)
KH (alkalinity) is 5.544 (99ppm x 0.056)
Ignore total dissolved solids (TDS) as this isn't useful for a tank situation.
Calcium and Magnesium is nice to know if you want to fiddle and fine tune you fert (Ca & Mg) dosing regime.