Lot · Water Tests & Treatment
Seachem Reef Builder 300 gram 10.6oz Raises Carbonate Alkalinity Free Shipping!
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Mon · May 25, 2026
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diesel_works
2,824 ratings · 99.80% positive
Description
From the sellerThe Seachem Reef Builder is a 300 gram water conditioner specifically designed for marine aquariums. Raises carbonate alkalinity (KH) with minimal impact on pH. A blend of carbonate sources that will not lower pH as competing bicarbonate only products can.
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