DEFINITELY - & it works GREAT!! When I do water changes from my tank I routinely pour them on my outdoor container plants - primarily the Dwarf Alberta spruce I have planted in large tubs by my doorway. They seem to thrive on it.

They just luv old aquarium water ! best roses I´ve ever seen.

Yes,Yes, Yes,outside and house plants love the fish poo. At any rate it is a much better use of water than down the drain. I use a Python vac. now and I plan on modifying it so the water goes out the window and to the flower bed beneath.

Always a good idea (provided you didn't use some nasty chemical or salt in the water to treat a disease). The nitrates in the water are great fertilizer. I've been doing it for 25 years.

Joel

here,here!!!!