One thing I never realized until later was heavier rock is not as good. Lighter rock means more rock with less space used. Porous rock also gives critters shelter. Walt Smith has a great deal through Pacific East Aquaculture for 50lbs of Fiji premium for approx $180.00 shipped.
http://www.pacificeastaquaculture.co...l.aspx?ID=2510
I will be ordering a box in a cpl of weeks to replace some of my "bunk" rock (holey rock, lava rock).
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For in much wisdom [is] much grief: and he that increaseth knowledge increaseth sorrow.
Member of the AGA (Aquatic Gardner's Association)
Member of the IBC (International Betta Congress)