Chemboys pH Up Flake
up to 20x stronger than GH;
up to 4-6x stronger than Advanced Nutrients
NO DYES (Why do others add dyes?)
THIS STUFF IS STRONG. BE VERY CAREFUL - WEAR SAFETY EQUIPMENT. DO NOT MIX WITH pH DOWN - AND YOU MUST ALWAYS DILUTE BY ADDING SMALL AMOUNTS TO WATER SLOWLY AND SAFELY, BEFORE USING.