My suggestion is to get a large pump sock or bag and line it on the bottom and sides with coarse filter material. Some come with both bag/filter media already or you can also just buy the bag and rig up using filter media of your choice. Make sure it is coarse and thick. It is easy to pull out of the pond and rinse it off with the hose periodically. Most big pumps also come with a rigid pre-filter (I like) and some with a sponge filter (which I find clog too quickly). I have a pondmaster 2400 and it is in a large fine mess bag with draw string and this bag came with a circular thick coarse filter that fits the bottom and a rectangular coarse filter I can wrap around the inside of the mesh bag. Then the whole filter, with it's rigid pre-filter, goes right into the bag (in the middle) and I draw it up around the pump with just the hose sticking out. It rarely needs cleaning other than a rinse and my pump doesn't clog ever. Here is just one source with bags but you can find combo units all over the internet. Most likely your own brand of pump sells something specific to your pump size and shape as many manufactuers do. Mine was actually not built for my pump model but it is big. Here is a link that might be useful: Possible Purchase Source

I also have a frog that appeared as a baby last spring and as of today, 12-30-12, he is still there. it is a small round plastic tub that holds about 5 gallons of water and is about10 inches deep. I have a heater that has kept the water right at 40 degrees. The other tanks that make up the garden have frozen. This is a green frog, don't think it is a bull frog. I have gotten frogs from somewhere over the past few years. This past summer,I had 3. The other two smarter ones left but this one stayed. This pond has a lot of dead leaves on the bottom and also a thick patch of green moss that is still alive and just barley pokes out above the water. I saw "Fred" just a few minutes ago with his head and nose up out of the water so I know he is not hibernating. I bought some aquarium frog pellets in case he should eat since he is active but I bet that was a waste of money. I feel better buying it anyway. Wonder if he will make it over the winter....if he does I wonder what effect not hibernating over the winter will have on him. There is absolutely no other water I know of around me, it is a mystery each year where these come from....several have been itty bitty but some come back a couple years then I don't see them anymore and a baby takes its place. I am attaching a picture from today Am I fighting a losing battle?

your post has gotta be a first for the garden web pond forum! i had a hen with the same problem, used vaseline on my rubber-gloved finger and pushed the prolapse back in and all was fine again for her- she even continued to lay eggs. a frog tho?- hmmmm. i donno. maybe IF you can catch it, use vaseline on a q-tip and try to poke the prolapse back in place? i'm very unclear about a frog's personal anatomy tho, so can't imagine if this is even possible. poor thing - nature just might take care of this problem herself but, like you, i would want to help. if you decide to euthanize, maybe wrap it in something soft and put it in a freezer? or drop it in boiling water like we do with innocent but delicious lobsters. both ideas make me sad. min

They are testing a bug at Leu Gardens that's 'sole purpose on earth is to eat air potato'. But as near as I can tell, these would not really do much in helping to get rid of the plant. Plants and insects eventually form a balance. Even if they managed to breed thousands of the bugs and dump them on an area, the bugs only seem to eat the foliage, so eventually the plants will come back and the number of bugs to keep them in check will have dwindled due to starvation. They would have to find a way to create and maintain an 'infestation' of the bugs to really make a difference. Here is a link that might be useful: Air Potato Bugs