Aloha, fun & authoritative answers -- no cost, no registration, no passwords, no popups
(as an eBay Partner & Amazon Affiliate we earn from qualifying purchases)

Home /
Site 🔍
pub  Where the
world gathers for metal finishing
Q&As since 1989


Diatomaceous Earth and Shellfish Allergies?

Q. Hello, My name is Matthew. I am the assistant facilities director of an Athletic club. I have a "potential" member who extremely allergic to shrimp and other shellfish. She is concerned with the use of shrimp or any type of sea shells used as a chemical treatment or in the filtration process of our spas and pool. We use DE in our filtration process.

My question is: Is the use of "Diatomaceous Earth" in a pool's filtration process a health hazard/issue to any person(s) having allergies to Shrimp and other shellfish products?

Matthew V [last name deleted for privacy by Editor]
athletic club - Seattle, Washington, United States

February 2012

A. Hi Matthew.

Unfortunately your question remains unanswered after a very long time, and I don't want the site to be questions without answers :-)

Diatomaceous earth is dried algae rather than shellfish. With nothing to go on, I personally wouldn't expect it to be a problem, but I have no qualifications or experience in this I'm afraid. Good luck.


Ted Mooney,
Ted Mooney, P.E.
Striving to live Aloha - Pine Beach, New Jersey

by Tui Rose

on AbeBooks

or Amazon

(affil links)

A. My Friend is highly allergic too and got his all over him today after treating his animals and now broke out in hives all over. I wouldn't use it.

A Somers
Stay at home mom - Abilene Texas
December 7, 2021

February 26, 2012

Q. What about Aluminium oxide ingested daily in the form of diatomaceous earth mixed into a glass of water? How toxic might that be?

I have a friend gone crazy, who is holistically trying to treat herself for some imagined "worm" by drinking this mixture twice a day! Aside from the obvious abrasive issue (!), what about toxicity to the kidneys and nervous system? I appreciate a response from anyone who knows the effects this might have on a human being.

Many thanks!

Sherry Kemp - Hawthorne, Florida

Diatomaceous Earth
on eBay or

(affil links)

February 27, 2012

A. Hi, Sherry. Diatomaceous earth is not aluminum oxide; it's mostly silica, although it might contain a few percent aluminum oxide.

Apparently food-grade diatomaceous earth is widely used in the fashion your friend is using it, but usually on animals, less commonly by people. I don't know the usual dose, but apparently health food stores sell it.


Ted Mooney,
Ted Mooney, P.E.
Striving to live Aloha - Pine Beach, New Jersey

(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories:

Chemicals &
Consult'g, Train'g
& Software

About/Contact  -  Privacy Policy  -  ©1995-2024, Pine Beach, New Jersey, USA  -  about "affil links"