MarMan
Aquarium Advice Apprentice
I have a DIY 100 gallon slightly planted aquarium. When I do my 25% water changes I have been using a 5 gallon bucket to treat the tap water and then do this again and again for 5 times until I reach 25 gallons. I just bought a device that connects to my sink so I now want to fill the tank up with tap during water changes and then add the dechlorinator. Is this bad for freshwater fish or the bacteria in filter?