Hello KB forum kichis, I am in the market for an air pump to aerate my pond and would like your guys' recommendations.....or at least lead me to a link where this has been discussed. I have a 7,500gal pond that is being aerated by a 5,000 gallon per hour waterfall that is about 18" high. However this is not enough for the 28 koi that are residing in this pond, ranging in size from 7" to about 24". Maximum depth is 5'6". Shoulda known better and place BDs with diffusers

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There are so many brands and sizes that I get a headache just thinking about the topic. Any help or suggestion is much appreciated. Thank you.