Justin wrote:
Thanks for that Rocco. :-)

One more question then if i could... You say that Muriate of Potash is
safe which I may buy as it comes in 2kg bags as opposed to 25kg bags...
What about Sulfate of Potash, would that be better as it's formula is
K2SO4, which is exactly as it should be... Is that right?

Muriate of Potash = KCl
Sulfate of Potash = K2SO4

Muriatic Acid = HCl
Sulfuric Acid = H2SO4
Potash = K2CO3
Acid + Carbonate = Salt + CO2

Either works to add K to your tank. The sulfate will also add sulfur
too, which may be a benefit.