Aquaclean HD is foam rich chemicals, So always use fresh water 1st in a mixing drum then use Aquaclean HD. And make sure cleaning surface should be proper dry. As Pet coke contain heavy oil so for its emulsification Aquaclean can be diluted 1:2 . While if pet coke stain is light it can be diluted 1 Ltrs of Aquaclean HD into 9 Ltrs of fresh water.
Total chemicals requirement for HANDY MAX is 60 pails of 25 Ltr, While for Panamax 80 Pails of 25 Ltr Aquaclean HD required.