Hi. Could anyone share tips on controling the chlorine level in tap water? I am using Fritz-Guard but even when I overdose it in my tank, the chlorine tester always give me a result of 0.1 ppm, the instructions says that the best level for aquarium is at 0 ppm but I just can't get there.
What I do for water changes is this.
I will pour 2 capful of Fritz-Guard (FG) 1 cap treats 20 gallons, my tank is 18 gals. Check chlorine 2 hours after filling tank results shows 0.1 ppm concentration. Did the same test 1 day later and no change is registered.
Did I do something wrong? Please advise.