Spirulina contains up to 5 times more protein than meat – up to 65% in some instances, and contains as many as 100 different nutrients including many vitamins, potassium, copper, iron, selenium, zinc and magnesium. It is one of the few products that contains all the essential amino acids, as well as five times more beta-carotene than carrots. https://www.stonebridge.uk.com/search?keyword=Nutrition
These copper bands are one of the best, non-harmful slug repellants around. Slugs and snails hate copper because it causes a harmless electric shock-like reaction when they come into contact with it, so they crawl away. Bend them into rings and push them into the soil at the base of your plant.