Water Gardening: Home Made Pond Filter - cheap, 1 by helenchild

helenchild wrote:
Rainwater from a roof with shingles can cause problems with your pond. There is something from the shingles that is bad for the fish and probably the plants too. My pond guy gave me this advise but did say rainwater is okay if you have a metal roof.
I wish I had more details. I would look into using your roof collected rainwater before assuming its okay. If you find out more details on this subject please share.
I have building a DIY filter for my pond on my to do list. There are lots of examples on YouTube to watch. Yours seems to work well. I love your glass wall! It must be great to see the fish from the recliner inside!
Helen