Thanks for confirmation Bill... I thought I may be on to something with those SMB beds. I've made several beds already around the pond using mixed sized gravel, but these lime stone areas just felt right and looked more natural. Also with all the big rock surrounding and underneath the limestone beds they may last more long term. With this in mind I'm really temped to add several more of the limestone type, but it takes a lot of time/money and don't want to do it if it's not necessary. I probably could build 6-8 of them now with the rock I have presently. Here's an example of the first SMB spawning beds I made. I've got the gravel in place for 25-30 of the beds similar to below pic. I just need to locate more cinder blocks or I may use rocks on some as well. How many spawning beds are needed for a 3 acre pond?





Last edited by esshup; 03/03/14 10:32 AM.