Re: "Food grade" Calcium Hydroxide! That is correct!

Must be a misprint on their website. It does not look like the person who wrote the FAQ knew much about chemistry; they did know canning however.

An extensive search will show that in addition to canners, reef tank hobbyists use pickling lime; most seem to be in favor of Mrs. Wage's all stating these products are calcium hydroxide. In addition, there are chemistry oriented pages for these hobbyists that show how to adjust pH in reef tanks using Mrs. Wage's Food Grade Calcium Hydroxide (Pickling Lime). These people put thousands, sometimes 10s of thousands into their hobbies and I doubt they would sacrifice their reef tanks to an unknown product.

Of course our well being and health is more important than a hobbyist reef tank.

As moreless and Lapis has stated, nothing is better for balancing and maintaining your pH than a good healthy diet. juicing high quality greens will get you there faster. I do have a very limited chemistry history as I majored in organismal biology in college. I did not pursue a career utilizing my major, so I have not retained most of the information I had learned, but I do still understand most of it when I read and study.

The only other caution I would exercise is research on the internet. There are misprints and unintentional bits of misinformation as well as intentional misinformation. It is important when researching something to triangulate your search so that you get collaborating information from at least three different sources (not funded by or maintained by the same source).

http://www.reefkeeping.com/issues/2005-01/rhf/index.php

http://www.google.com/search?hl=en&q=%22pickling+lime%22+calcium+hydroxide%22

grz