How much Ph plus
  • I recently got Ph plus but the amount that is has for pool care is very small 1/3 of a cup for 1,000 gallons of water. So how much do I want to raise my 2 gallons of water for my tie dyeing? Or how much soda ash do I use? Thanks
  • If the fine print on the label says that it is sodium carbonate, then you can use the exact same amount as you would normally use of soda ash. For tie-dyeing I use one cup of soda ash per gallon (250 ml per 4 liters), but half that will usually work fine.

    Rarely, stores will sell sodium BIcarbonate instead of sodium carbonate as pH Up. You don't want sodium bicarbonate (unless you're steam-setting afterwards).