4 deep koi pond with 4 bottom drain 2 fiber reinforced concrete sprayed over 45mil epdm liner.
Concrete over pond liner.
Concrete ponds are more permanent than a liner pond.
But with a pond liner the parameters are fixed they have already been set by the manufacturer of the kit permitting no design liberties.
Add 1 parts of concrete reinforcement for stability.
The liner will seal out the lime in the concrete that is harmful to fish.
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.
Mix the ingredients in a large container.
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.
Spray on a rubber liner to seal the pond if you are using it for fish.
A liner pond is also less expensive to build and a liner pond tends to maintain a more neutral ph.
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.
This is a big reason most do it yourself pond builders choose a liner pond over a concrete pond.
Limestone and clay are mixed heated and ground to the silky powder we call cement.
Add 24 inches to each.
Concrete vs flexible pond liners concrete is often portrayed as a permanent or nearly indestructible option for lining your pond.
Add enough water to create a mud like paste.
However it s not quite as durable or easy to use for pond lining as you might assume.
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.
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.
You can also use a paint on rubber liner instead of a spray on liner.
Pond construction with 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.
It is easier to install rockwork on a concrete pond compared to a liner pond i e.
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.
Never ever use concrete.
If you want the rockwork mortared in place.