What do you do with the water you take out during water change? I used to take the bucket straight outside and pour it around my roses. They really thrived on this and I had beautiful blooms all summer long. I had to check that no fish had gone up the syphon tube, so I stood the bucket for a few minutes to let it settle. Down the road from us someone used to put the end of the syphon tube out of the window, hopefully they only had large fish!