ive had my fish in a 6 gallon aquarium for a year now, and we changed the water today, and we filled it with water from the tap (like normal) and put in the chlorine treatment (same weve used in forever) and all of a sudden, the fish started dieing! it was strange, we had some cardinal tetras, and something similar to them only the stripe was solid yellow and thinner, 2 algae eaters, and 2 or 3 aquarium frogs. they just started going belly up! we did everything the exact same as normal, exact temperature, everything.
is something wrong with our water? its river water, if that helps, our house is 13 years old, (1994 for you non math people) is it lead? im confused, please help.
Answers:
Let the water sit out for about 24 hours in a gallon water jug that has never been washed with soap, that way you can be sure the water is de-chlorinated.
Make sure you only change 20% of the water. If you change any larger percent the fish will become stressed.
The PH may have been different this time. I would just use distilled water, then you don't have to treat the chlorine and its only a dollar a gallon.
You just didn't use enough dechlorinator. The water companies don't use a very consistant amount of chlorine or chloramine in the water and sometimes you need to use more. I always use extra just to be safe.
Also, you might want to contact your water supplier to see if they may have switched from using chlorine to chloramine. It's more stable than chlorine, so more water providers are going to it. Chlorine remover either doesn't affct it, or it just breaks the molecule apart, releasing chlorine and ammonia into the tank.
See link: http://www.thetropicaltank.co.uk/chlor.h...
