Magic Tricks

I've been playing around with this for a little while trying to get the balance right and it's a struggle. Maybe it's an issue because the water is different in Australia but the measurements suggested for performance aren't working out great. I'm having a very hard time avoiding a yellow tint to the water before starting. The description also says there's enough chemicals included to turn 15-20 gallons black and clear again. Maybe there was an error because I seem to have enough with 2 of the chemicals included, but the 3rd chemical I only have enough to change 2, maybe 3 at a stretch. Those issues aside the chemicals are quite effective with the water changing colour in just a few seconds and being fairly easy to use.