Here is some information about a homemade buffer solution that Brad Ward brought to my attention a while back. Instead of using some of the higher priced name brand alkalinity buffers this buffer consists of plain old household Arm & Hammer Baking Soda and Arm & Hammer Super Washing Soda.
Here is an excerpt from a post that Brad had replied to on Reef Central:
"I add Arm and Hammer Baking soda in 6 parts and Arm and Hammer Washing soda in one part together for a home made buffer. One heaping teaspoon per 25 gallons raises DKH 1 point. The two together makes a solution pH of about 8.0. "
Here are two links to more information about this buffer on Reef Central.
I have been using this homemade buffer myself and it does work as Brad said it would. I use this product everyday in my 90 gallon SPS dominated tank and it works very well at keeping both my alkalinity and pH in line. The best part is that it only costs a few bucks and it lasts a long time.
Below are two pictures of the Arm & Hammer products because there has been some confusion about which ones to use.
Arm and Hammer Baking Soda
Arm and Hammer Super Washing Soda
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Visit Doug's Reef and Fish page at www.hawkfish.org or email me at [email protected] .