Really couldnt say- Ive never used one of the coil types. I would assume the sulfur denitrator would be more efficient because you are providing a food source and oxygen depleted environment for the anaerobic bacteria (the sulfur coupled with slow water flow) rather than just the anaerobic conditions you get in a coil. But like I said, thats just a speculative WAG.
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Reaching up and reaching out and reaching for the random, or whatever will bewilder me.
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Current Tank Info: 240g LPS/Softie Reef
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