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Contains about 300% the magnesium of almost all other dry magnesium products on the market
vitamin and mineral premix
PINPOINT ORP Probe comes with a 10 foot high supression cable and a BNC connector
by providing this critical element in a time-release form
N30 PREMIUM BLACK VOLCANIC MEDIA (1.5KG ) Macrorocks Contains about 300% the magnesiumN30 Premium Black Volcanic Media (Effective Media for beneficial bacteria to colonize) N30 Black Volcanic Media, natural biological filtration that promotes beneficial bacteria to settle and colonize. These will accelerate the breakdown of biological waste and enable long term stable filtering, ideal for all types of aquariums. Features: For freshwater & marine aquarium use Ideal for beneficial bacteria to colonize. Creates quality water for ease of