Originally Posted by SouthernColoradoMarxFlyer:
Thank you SJC for the detailed information. Very nice looking pond.
I didn't realize that I would need so much filtration. Two 100+ pound bags of lava rock must be huge, and the PVC pipe set up sounds a bit complicated. Do you have to replace the lava and pipes or periodically wash all of them?
I have a modest sized fountain (in a galvanized basin partially filled with river stones inside a half whiskey barrel) that requires very little. I skim the top occasionally by overflowing while feeding with a hose at the bottom. That keeps the water pretty clear. I figured the same for the pond and stream - just have a pump at the bottom of the pond running water to the top of the stream. I also planned a spillway to occasionally skim the top water off like I do the fountain. That may be a bit naive, eh?
Maybe I need to rethink this some.
If you don't intend to keep fish and plants and just use it as a "fountain" than you could likely get away with less filtration. I do strongly encourage you to investigate getting fish and plants and the filtration system they need - they provide hours of enjoyment throughout the years.
The lava rock, pipes, and foam pads get power washed each spring during the big spring cleaning. Other than that, they stay put unless an emergency necessitates taking them out (which I haven't had to do in years).
By your description, and again if you don't intend on fish/plants, you should be OK but I think that depends on the area of the pond, what kind of things can get in there in terms of fallen vegetation, etc. My backyard pond ran for years on just a single pump recirculating the water. My neighbors across the street also have a small pond in their yard, which has fallen into disrepair over the past few years. I remember when it was quite nice with a small fountain and fish swimming around. From what I was told by them, they built it by purchasing a plastic children's pool (something you could find at any large name toy store, home store, etc.), put it in the ground, put a liner over it, filled it mostly with rock and placed a small pump to recirculate the water in there and 2 or 3 cheapo goldfish. For years it was problem free until other projects caught their attention.
Here are two current photos, taken this afternoon, of my big pond. It is a rainy day causing some displacement of mulch and whatnot...waiting for the weekend before doing some work, cleaning, and pruning again. It is in need. The goal is to keep it balanced with the proper number of fish and plants and of course, the proper filtration system.
On the right, under that large piece of flagstone in the skimmer box described in my earlier post. You can also see the "bubbler" pump in the center taken from my small pond in the backyard. In the skimmer is a net to catch floating debris, two or three foam strainer pads and the pump. Also included is a (currently inoperable) automatic filling system that tops off the water level automatically. The bridge on the left goes over the stream.
Moving on to the left side of the pond, you can see the waterfall and other side of the pond. That tall plant is a yellow Iris. Floating are different varieties of water lilies, water lettuce and floating at the top of the waterfall box is water hyacinth and water lettuce which provides protection for the fish, oxygenation, and algae control. The Iris needs to have its spent blossoms trimmed this weekend. On the right of the waterfall is a decorative grass called Mondo Grass which is not to be mowed...I'm thinking about taking it out as I never liked it much and I feel it has a very messy appearance.