If you want the rockwork mortared in place.
Concrete over pond liner.
Never ever use concrete.
The easiest way at this point to hide the liner is to start stacking rocks in the pond from the bottom up along the sides.
A couple of inches of concrete over a liner will make a big diff where you know hoofed or clawed critters are going to merrily amble about in a pond where storm tossed branches may lance through it will keep the liner from being damaged.
A liner pond is also less expensive to build and a liner pond tends to maintain a more neutral ph.
Mix the ingredients in a large container.
Add 1 parts of concrete reinforcement for stability.
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.
Concrete ponds are more permanent than a liner pond.
A pond liner is a flexible plastic liner laid over the interior of a pond to prevent the water from leaking into the ground and to prevent the pond from becoming muddy.
But with a pond liner the parameters are fixed they have already been set by the manufacturer of the kit permitting no design liberties.
4 deep koi pond with 4 bottom drain 2 fiber reinforced concrete sprayed over 45mil epdm liner.
Concrete has a number of drawbacks when used alone.
Pond construction with concrete.
Use a dark colored rubber liner hold the can 6 in 15 cm from the concrete and spray it on from top to bottom.
It is easier to install rockwork on a concrete pond compared to a liner pond i e.
You can also use a paint on rubber liner instead of a spray on liner.
Spray on a rubber liner to seal the pond if you are using it for fish.
While building the concrete pond designs can be outlined and chosen at will designs such as altering the width length or shape of the pond.
The rubber liner creates a very soft surface for the koi but even when a liner pond is installed properly you will have a number of minor folds in the liner surface.
It will chip off and land in the water.
Add 24 inches to each.
However it s not quite as durable or easy to use for pond lining as you might assume.
Add enough water to create a mud like paste.
A fish safe epdm pond liner large enough to cover the entire pond is measured by the length plus the depth multiplied by two and the width plus the depth multiplied by two.
Once the pond is filled with water these folds become barely visible.
Limestone and clay are mixed heated and ground to the silky powder we call cement.