Did you buy some of the scales for weighing gemstones? Weighing out the right amount of things like koppafloc and measuring the gold is why we bought a set here.
A little whirlfloc goes a long way too. 1/2 a tablet for a 23 litre brew is about right.
And I have always used whirlfloc but Kopper floc power I was given by TDA , I did not know how much to use until it was too late , hope it will not affect my brew