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rguyler · 07/24/2009, 08:50 PM

Spanky, that wasn't really directed to you, just passing on general info.

I would wash everything I'm planning to use. I've read comments from others who said their oyster shell had a good amount of other stuff in it. I also think that something that fine won't help much with reducing the density of the concrete, which was the original reason for such additives.

07/24/2009, 08:50 PM	#771
rguyler Registered Member Join Date: Jan 2009 Location: Dayton, OH Posts: 606	Spanky, that wasn't really directed to you, just passing on general info. I would wash everything I'm planning to use. I've read comments from others who said their oyster shell had a good amount of other stuff in it. I also think that something that fine won't help much with reducing the density of the concrete, which was the original reason for such additives. __________________ -- Rik Current Tank Info: 120G Reef - AI Hydra 26HD lighting, AquaC Skimmer, Reeflo Blackfin Pump, Gyre XF250 Dual Pumps, Aqua Medic Dosing Alk/Ca/Mg & Vinegar, HydroFill Ti ATO, Basement Sump w/Refugium and Kessil 160 Blue Lights