I have had the same kind of pond for a long time. They hold up well, mines about 7-8 years old. In the summer I grow labrynth fish(no pump, stagnant water). These are also good for any kind of pond plants since theyre already acclimated to stagnant water. Good work on the danios! Im having so much fun with these that I bought 3 of them . Most of the time they look like yours.
The plant that will drape over the back, and grow in the gaps of the rock around the tub
Hey do you know what kind of plant this is? i found some at the base of a tree and transplanted it to my pond and it can look really nice when it drapes over rocks. It's very easy to transplant. All I had to do is just put a stem in the moist moss and voila roots a day or two later... The only thing though is that there is a short period of it being nice and big before it gets too hot then lanky looking but I think it's effect is worth the labor of cutting it back when it gets too big and removing it when it gets ugly during the very hot months of the summer.
Here is what that plant looks like on my pond, you can see it draping over the water:
Hey CL checkout my post you just need an airstone that's all. All that fancy stuff they're throwing at you is useless unless you're filtering it and want it show quality. I dont filter mine water is crystal clear I threw in a crapload of guppies and a lot of plants moss too and that's it.