Quote Originally Posted by joe7 View Post
is the powder based chemical is as good as the liquid based chemical,as my tap water contains chlorine,afraid that the mixture of the powder will not same as the one that comes ready mix...
No matter if your chemistry is liquid or powder, you'll still need water. The liquid chemistry is concentrates and will need to be diluted with water before use. Chlorine may or may not be a problem, I don't know. Many municipal water supplies are chlorinated, and the problem is easily overcome. Boiling will drive off the chlorine and most of the dissolved oxygen. Simply leaving the water out in an open container for a day or so will do the same for the chlorine.