Check the listing for details. Seachem Reef Builder™ Raise Carbonate Alkalinity KH w/out Raising pH. Condition: New. Listed at 12.99 USD. Seachem Reef Builder™ Listing is for ( 1 ) Bottle of: Seachem Reef Builder™ Reef Builder™ 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 Will not deplete calcium, magnesium, or strontium Description: Reef Builder™ raises carbonate alkalinity without immediately impacting on pH. With long term use there will be a tendency to stabilize at pH 8.3. Used as directed, Reef Builder™ will not deplete calcium, magnesium, or strontium which usually tend to precipitate with increasing alkalinity. Reef Builder™ and Reef Buffer™ may be used together. Use Reef Builder™ to raise carbonate alkalinity without affecting pH. Use Reef Buffer™ to raise carbonate alkalinity and pH. Reef alkalinity should be maintained at 3–5 meq/L (8–14 dKH). Alkalinity should not be allowed to fall below 2 meq/L. PayPal—a service to make fast, easy, and secure payments for your purchase! Please feel free to contact me for International and combined auction shipping rates or with any questions or concerns that you may have about my products. Thank you ! Certain images and/or photos used in this template are the copyrighted property of JupiterImages and are being used with permission under license.