[AquaticLife] Hydrogen Peroxide
HP and salty water are good for disinfecting but I don’t think they are as good for hard water mineral buildup.
White vinegar will help soften and remove hard water buildup and is easily rinsed out after using. Any residual vinegar that may be missed during rinsing will not be harmful when diluted in the tank. The vinegar is actually very acidic so it starts breaking down the mineral build-up to soften it up.
If you still have some really stubborn build-up after using the vinegar, then try a salt paste and a scrubby pad.
Lenny Vasbinder Fish Blog - http://GoldLenny.blogspot.com
Category: Philippines Internet Koi Society
