SEACHEM REEF BUILDER 300G by SEACHEM LABORATORIES, INC. Sold out $8.99 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Sold out Raises carbonate alkalinity without immediately impacting on ph. Carbonates and calcium are essential to all coral growth. Will not deplete calcium, magnesium or strontium, which usually tend to precipitate with increasing alkalinity.
