C
CT Guy
One other point, is how they process the kelp is important. If they use harsh chemicals, it can damage the quality of the final product. Look for cold water processed ascophyllum nodosum, like CC stated above.
If you find this interesting, check out Seaweed and Plant Growth by TL Senn. Under 10 bucks I believe on amazon.com.
If you find this interesting, check out Seaweed and Plant Growth by TL Senn. Under 10 bucks I believe on amazon.com.