I have a fish pond and our new puppy has pushed some of the rocks surrounding the pond into the pond and has torn the liner. What is the best way to repair this.

Amazon have a good selection of pond sticks and pellets and other fish food. http://www.amazon.co.uk/b?ie=UTF8&node=471519031

Here is a schematic of the order of the media.
AN-315 - FishMate 3000 GUV - 16 Watt UVC + Bio Pond Filter
Click to close

you should wait a week to make sure that everything is stable in pond and add your fish, avoid too many fish and overfeeding them. enjoy your fish pond, i love them.

there is traped air in there you are going to have to lift the edge of it and let the air out

It worked for one season on mine. As the crack got older it became longer and wider. Mine was due to not sinking the pond all the way into the ground which caused stress from the weight of the water causing it to crack more. The second season I used a water epoxy putty I bought at home depot in the glue dept. It is greenish blue and turns white after mixing and can be used underwater if necessary. I filled the gap and then placed the repair liner like you are showing over the top and sealed the edges with a black waterproof silicone. This also worked for a season. Now the crack is even larger and wider and nothing I am doing this year is holding! I can't seem to find one the same size and shape or I would replace it. My next attempt is going to be a plastic welding kit, but I haven't tried it yet. Good luck.

they sell algae killer for ponds and water nurseries and some pet stores that u measure a dose for pond size and add to water to clear up. if there are no fish and don't plan on having fish in pond add several gallons of bleach as cheap cure

There is sealing options once you discover the hole or tear. Allow pond to drain down to it's stable level and investigate. The liner material will dictate what your repair options are. Firestone Pond Liner or Pond King EPDM liner can be best sealed with a piece of "cover" tape - a single sided heavy repair option that bonds very well. Clean with a epdm solvent first or Coleman fuel if you can't find that. The solvent makes EPDM very tacky (wear gloves) application is much like fixing a bicycle tube.

You don't need a bulkhead if your liner is EPDM. You can use a boot that is attached with adhesive that will seal you pvc piping. I don' t see a problem with dirty water going thru the pump before the filters. for some diagrams of settling tank installations see:
http://www.koipondfiltering.com/koi_pond_filters_diagrams_intermediate.html

Well first thing is to locate pump and then check to see if the screen is plugged. turn power off and check inlet tub of pump for sticks, rocks,or leaves in it that can plug the suction on it