So here's my dilemma: I just bought a house that came with a pond/waterfall and some fish, the previous owners had built. While i don't really care for the look of it it's got to stay until i build the new addition in the back. The pond is not real big and about 3 ft at the deepest. But they put it in the front and it is in DIRECT sunlight ALL DAY. I haven't put any plants in it yet but I'm wondering if I should do something besides just plants? By the evening time the water temp is pretty warm. Questions: -is there an ideal water temp for koi? -recommendations on types of plants to use -chemicals that would be safe to control green algae -why people thinks it's a good idea to construct these themselves? The last one is due to frustration b/c the waterfall is so loosely stacked that my 2 year old could push the whole thing over. And lets not start about the 2.5 tons of lava rock EVERYWHERE. I started with 2 large goldfish and added about 10 small koi. I've lost 4 in about 2 weeks. I typically deal in hardscapes, and waterfall construction, not fish or living environments Tad - I know the type of weather conditions you deal with in the summer there in FL, any suggestions for the HOT summers?