I swear by garlic too but at a rate of 1-2 cloves of really fresh, crunched garlic per 10 gallons floating in a mesh bag in the sump. Replaced every 3 days. People think I'm nuts but it seems to work for me.
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72 gal bowfromt mixed reef sps dominated, 25 gal mineral mud type sump/refugium Skimmerless
2x250 14000k phoenix hqi 2x96 pc actinic, 50x flow
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