I hope this works ... It is a link to my club's yahoo group, a picture of our reef balls before they went in the water. They were placed in 30fsw, a protected nook, on a mud bottom. Around here, concrete is relatively cheap, for this type of project I can't imagine anything cheaper.


http://f9g.yahoofs.com/groups/g_hr_1...wzM1FBZT1HcOoh