Do you remember movie "Signs" and scary aliens there? They were taking in such a way, that is similar to single frog's sound. Probably in bigger amount they would be disturbing, but 1-2 seems to be fine and I hope they will be not disturbing to neighbours - at night, when sound travels faster.
As you can see, water in the pond looks pretty fine. Glones are growing fast, so already after 1 week after cleaning pond lost that "weird fresh grey" plastic look. I prefer green pond - looks more natural and better. At the beginning after building a pond, most tricky is to keep the proper chemical balance, so glones will not overtake your pond. Any chemical means are not really helpfull - even those mild ones are in different ways harming aquatic plants. The best way to prevent glones colonizing pond, is to use the acidic peat in the filter - it contains humic acids that dissolve in the water - glones are allergic to it. The only thing is, that peat has to be special: firbous and free of fertilisers - not garden peat, which is ground and usually mixed with fertilisers.