It is also possible to heat the greenhouse with fire(if u have a way to keep smoke from getting in)
Nice pond. Try spraying your water lilies with BT(bacilus thur.)once a month and that should keep any bugs off them. Be sure to keep them fertilized(monthly) and they should be good to go
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That's what I wanted in the first place, no goldfish or koi. But the type of fish I can have here without heat seems so limited. I also fell in love with a golden butterfly koi, which didn't live. I gotta have another, max 5. It's hard to see the natives in such a big pond, so a splash of color isn't so bad. Bluegill, sunfish, minnows, dojo, and the tall fin shark are what I've tried. I still have a few goldfish to remove. I plan to get flag fish too, but besides cats I might step on, I haven't found what can winter here. I don't know my winter pound temps yet. What else is good in a community? I'm trying to keep the predator fish down to ones that eat baby fish, not anything over an inch, like my shark. Lol I do have Chinese algae eaters in here. Are they the same as Siamese and can either survive below 60?I would also avoid getting more than 1 Koi. Other fish to consider if u go the heated routearadise fish,studfish,lyretail killifish and a fewvpeacock gudgeon and Amano shrimp