Tonyb111111
Fishaholic
Just thought I'd check this practice is ok as I can not see any reason why it shouldn't be. I have two 25 litre drums which I use to to a weekly 25% water change. Once the water change is complete I fill both drums with tap water and dichlor accordingly. I then leave these for a week, sometimes two, until the next water change. Just want to make sure that this practice does not cause any ill affects to the water.