4 deep koi pond with 4 bottom drain 2 fiber reinforced concrete sprayed over 45mil epdm liner.
Building a koi pond with concrete block.
The choice of this size of block may come as a surprise because we so often see ponds constructed using 9 hollow blocks backfilled with concrete and reinforced with steel rods.
For curved wall designs you can use concrete blocks as we do in our bubble less koi pond polyurea concrete or gunite can be used.
3 size rebar 375 was used in the slab.
Measure half of the diameter of your pond on a piece of garden twine and cut the twine to this distance.
Remove the sod if necessary from.
With the pond box retaining walls completed you re now ready to place the hydroclean pond skimmer.
Do not place your pond under trees that may shed leaves into the water.
By using the hydraulic rebar cutter the rods could be cut to specific lengths.
How to build ponds with concrete blocks 1.
As this pond was designed to be only 3ft 6 deep and to hold around 1 700 gallons of water the walls were constructed of 100mm dense concrete blocks on edge.
Once the area is clean use a shovel or front end loader to dig out the pond giving the sides a slope of 45 degrees.
Select a level location for your pond.
Concrete and mortar have been favored by pond and fountain builders since the roman empire and the formula has changed little in the past 2000 years.