John Huff, I am concerned about the depth of the pond too. I had a little landscaping done at the front of my house last Spring and asked them to install a pond kit that I'd had for quite awhile. It has heavy black material that they doubled to make the bottom and sides of the pond. I'm so sorry I didn't think to ask them to make it deeper. Now, I'm not wanting to disturb my 3 fish by scooping them out next summer, cleaning the liner, digging deeper. I'm afraid I'll harm them. Is that hard to do w/o problems?
My filtration system is a replacement one I ordered from Pondmaster's. The small filter that came with the kit would plug up within hours last summer. The larger one only has to be cleaned once a week. I only turn the filter on now when the days are warm, not wanting to make the water colder than it already is. You can see the filter in the area the fish are gathering.
The large egg-shaped thing on the surface is my deicer. Before I got that, my pond almost went completely iced and I was afraid of ammonia build-up in such a small pond. They like to hide under. It may provide them with a little warmth.
I also set up a large flat rock, supported by two rounder rocks so they could hide under it.
You can see the one plant I put in last summer. Looks like they have been nibbling it this winter.
Finally, I have 3 rock-like solar lights on the bottom of the pond. Don't know if these provide a little warmth, but they are very pretty, reflecting up on my brick house.
Hope I've answered questions above. I am a newbie and not nearly as knowledgeable as you all about what I need to do to maintain my pond and keep my fish healthy. Is there a device that checks ammonia and oxygen levels in the pond?