BTW here's a really cool DIY S & G filter that is used as a secondary filter in some koi ponds to produce gin clear water. I like how he cleans the solids out too.


http://www.koiphen.com/forums/showthread.php?68132-Birdman-s-Sand-Gravel-Filter&highlight=Birdman%27s+Filter

Last edited by Cecil Baird1; 10/14/15 09:12 PM.
If pigs could fly bacon would be harder to come by and there would be a lot of damaged trees.