Originally Posted by SwimyRainbowFinn
i guess my water must not really need it, and its one less thing i need to buy, lol, sorry for ruffling your feathers.
It really depends on your water source. Some water treatment plants add chloramine to the water in addition to chlorine. Chlorine can evaporate after about 24 hours, but chloramine takes weeks to fully evaporate. Your particular fish may just be more tolerant to these poisons, I would never advise just skipping dechlorinator because you feel like it--even if the water is aged and not treated with chloramine the dechlorinator still removes heavy metals and other nasties that could naturally be in your water.
Welsh, you could call your water company and ask what chemicals they add to the water. If they don't add chloramines, it would be feasible to do a partial water change with some aged water. I don't see why you can't go to a pet store or a fish store--where I live they even sell dechlorinator in the pet section of my grocery store. I don't really know how it is in Europe, but it's certainly not the dark side of the moon--dechlorinator is a pretty standard product. Good to hear you managed to order some, though.