For concrete ponds the easiest solution for leaks are to cover them with a rubber liner but they are tricky to install.
Make rubber roof ok for ponds.
I would urge you to get your roof runoff tested to see if it is actually poisonous to fish.
Some rubber roof or epdm manufacturers market their product to be used as a pond liner.
The roof pond concept combines the traditional functions of a roof with a means of natural heating and cooling.
Also known as tar paper roofing felt originated in finland in the 1870 s as a waterproofing underlayment for roofs.
When choosing a rubber pond liner it is important to choose one that is specifically being sold into the pond market and not into a different industry such as roofing.
First paper was impregnated with coal tar.
The key elements of the concept are.
Although the two industries may seem similar roofing membranes may contain certain chemicals that could be dangerous to fish and other life in your pond.
The product is non toxic and the only thing on the rubber when you get it is talcum that keeps.
How to lift a pond liner.
Besides providing the water proofing feature it also provides a solution to the roof leaks problem.
Since you will have a long term need for pond water a rain water harvest system is in order.
It provides protection to the surface both against the fresh and salt water.
Forty percent of the time the fish will be flashing scratching and dying within 14 days.
Epdm liquid rubber on the will not.
Liquid epdm rubber no doubt is the best.
Thermal coupling of the water with the occupied spaces.
Later asphalt was used in the manufacture of roofing felt.
Exposure of the water pond to sunshine for heating.
Sixty percent of what you ll find in rubber roofing material is safe for fish.
It does not seem that there is much of a difference between a roof liner and a pond liner anyways except the availability and the price tag.
And yes it is safe for fish.
Use of water for heat storage and as interim heat sink.
Liquid rubber coatings provides an easy one time solution to your pond leak regardless of if they are made of rubber concrete or plastic.
Flat roofs adheres to a wide variety of building surfaces white alcolin vinoseal can be tinted to make other colours by using universal tints.
The pond surface is usually plastic concrete or rubber lined.
It has everything to do with the fungicidal powders and elastomizers things that keep rubber stretchy that they put into the rubber roofing material.
The pond liner i got came in a 10 foot roll weighing about 360 pounds.
It was a challenge to get the roll.
I even was able to get the pond liner on kijiji for a very good deal.
Most plastic is fish safe and so is epdm rubber pond liner.