SF Bay Area Koi Club

Organization of Pond and Koi Keepers




Pond Rebuild -- The Evaluation and Tear Out -- Part 1

11/19/2015 9:20 PM | Anonymous member (Administrator)

The Journey of Pond Gone Wrong to Something Wonderful!


This ponds transformation began the first week of September and we are on track to completing it by Christmas this year.  One of our newest members, Aurora, hired a professional Bay Area pond builder, just last year.  She spent a small fortune.  This builder, executed her pond in 3 days.


We will start with tearing this pond apart and through this blog you will have a chance to learn techniques and equations to creating a pond from scratch.  Here we go.....




OK, so here is a terrific example of a Pond Gone Wrong.  I will spend some time pointing out poor choices that this builder made in his delivering a properly working ecosystem.  The above view is from Auroras bedroom window and it is the only thing I can say that this builder did correctly.  It is always nice to place the pond in a position that it can be viewed from many different angles.


From this angle, you can see that the large square (bottom center) is a plastic lid to a skimmer that is best equipped for a swimming pool.  Its placement is also incorrect, the return water coming from the waterfall traveled directly into the skimmer.  There was no bottom drain.  Without a bottom drain, silt and fish waste accumulates and turns into a pea green, mucky mud.  Also, the liner is showing.




This was the view from across the yard.  It is simply too small for the yard.  It looks like a pile of rocks.  It is difficult to even see the two show pieces of the yard, which for Aurora are those grey bird baths.  One of the problems with the placement of the bird baths is that they are placed too high here, at 3' and 3.5' feet in the air, when the wind blows, so did the water from the pond.  The builder, must have tore the liner when he was filling up the pond with gravel and lining the sides with boulders, her water level was really low.




Do to the low water, Aurora had to rig a net and stakes, to keep raccoon from eating her fish.  Difficult to appreciate a pond when it is covered up in a netted wad.  A properly built pond doesn't need these type of precaution.  There is no organic use of the rocks.  The water fall was placed in such a way as to need plastic ramps to try to direct the return line to flow into the pond.




Here, you can compare the over-sized skimmer to the size of the pond.  Although, the soil here is clay based and is really hard, one would not be able to fill this pond up because the top rim is not level.  We haven't gotten rain in years, but if we were to get regular rain again, the top rim can sink or slope.




Here is another example of how a professional might rig your setup and it is not legal.  I am referring to the grey junction box you see there and the grey conduit.  Several things, are wrong here.  First, is that the power line was laid underneath the waterfall and directly under the sprinkler layout..  Second, the power supply was buried only 8" below the grade level of the yard, it should be 18" below ground. Third, is was tied into the house by being hot wired under the house onto another wire which tripped the bathroom circuit.




One shot that shows how having the electrical line buried real shallow and directly under the water fall was incorrect.




This picture shows the bowels of what we now have to work with.  Let the planning begin.  We did some digging here and made the choice to make the main body of the pond to be 4' x 9' x 3.5 deep and it will have a bog off to the side.  In a few more blogs we will start working with math to find out how much the above equation of dimensions = how many gallons this pond will hold.  Since this yard and hole has no actual point of level, we begin with a level line and some orange string to create the ground zero point that every other point of the pond is based upon.


Here is a sketch of what I propose to create:



Tune in later for Part 2.

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