[Betowess]

Originally Posted by ThomE

Damn Jayrug,

That's a hard question. But I think I can help ya out a little ..


So, you need 2.54 grams of CaCL2 & 2.96 grams of MgSO4 to raise 55 gallons 1dgh.

I use 3:1 for my tank and it hasn't cause any issues.

Good Luck

So to get approximately 5dGH on a 50 gallon water change, would I need about 12.7 grams of CaCL2 and just under 15 grams of MgSO4? My tap GH is darn near zero.

I think I'm noticing a calcium deficiency and I am leaning toward ditching the oyster shells and trying to get more precise. I use epsom for Mg. And would you mix a batch of the two and then teaspoon it out into a water change prep tank. Because I have to use a prep tank to raise my soft pH to off gas CO2 - I have very soft well water which is in the low 5 pH out of the well's tap. By off gassing for a day or so I can get my pH up a little over a degree.But I'm still left with zip GH and KH. I usually add a little baking soda to bring up the KH too. Any help much appreciated. bob