Catfish ,I ran out of time ,I bought a EOCP268 elemental solutions ,$39.00 on line 3.48 psi 951 g.p.h.,using 3 - 1/2 pint plastic bottles full of creek gravel w/ over 100 -.004 pin holes sealed in the pond ,fish hovering around all three ,I got the big water pump working too no ice on pond, pool iced solid .I had issues w/ lower pond ,next day after air pump died,leaked ,Bad had to transfer all gold fish to upper pond ,about 100 ,till weather permits fix on lower ,unsure as to pumps longevity ,noisy ,but seems to put out a lot of air ,been five days now! Have not lost any fish ,the pumps look expensive ,I did not look hard yet ,but did not see any pricing ,I had to jump on this and fast .pump was here in 3 days .I used my air brush compressor as a stop gap . This cold weather is miserable to work in anyway, but in a Jam like this, short cutted everything ,All I can do is keep a eye on it till we get a break in the weather ,then Katey bar the door ,Thank you for all you sent ,I'll go over it all and make a plan .You should have seen me punching holes in Boost Bottles w/ My wifes used diabetic test needles ,any port in a storm. Thanks again !