Start with the first test to try and locate a pond leak. If the waterfall is the only means of oxygen to the pond, you will want to put a temporary pump in the pond to provide oxygen for the fish and plants. So now with the waterfall off, you can let the pond go for a few days and see how much water the pond loses per day versus with the waterfall running. Some pond contractors will use two pond liner repair patch liners in a pond build and this can lead to water loss at the seam location.
Pond liner repair a perfect solution
With a pond liner repair pond some of the more common areas that a pond will leak are around the bolts that connect the rubber liner to the skimmer, plants pushing over the liner causing water loss, a tree root puncturing through the liner or possibly the liner is just really old and it is just cracking causing leaks.
The pond leak is found
Once the pond leak is found, it is just a matter of prepping the area and patching the hole similar to the epdm pond liner repair you would patch a hole in a bicycle tire. The products needed pond liner repair kits; to make this repair can be found at your local pond supply store.
If you have a concrete pond
If you have a concrete pond the most common reason for water loss is due to cracks in the concrete. In some cases new concrete must be poured or a liquid pond liner repair can be installed over the existing concrete pond.
For under water repair you have to follow these:
Peel back the wax paper when the Pond Liner Repair cures to complete the patch job. Use of fish pond liner will make your fish safe and pond will be secured from leaking. With all this you can easily patch the liner under the water without draining the water out and repair will be reliable and long lasting too.