Alkalinity Balance, pH up, pH down, Calcium Balance, Water Stabilizer, and clarifier are all swim-safe chemicals. Wait about 20 minutes, and you are free to swim. We suggest adding algaecide, Super Erace, and shock at night, after everyone is out of the pool. It is safe to swim again the next day.
Sardines Magnesium Content. Welcome to the nutritional magnesium content in 2 different types of sardines, ranging from 39 mg to 34 mg per 100g. The basic type of sardines is Fish, sardine, Atlantic, canned in oil, drained solids with bone which in 100g contains 39 mg of magnesium.
I've been doing ~1500 mg salt (table salt w/ eggs at breakfast, 1 bouillon cube), ~3500 mg potassium (potassium chloride), and ~125 mg of magnesium (some vitamin supplement). This is in addition to quantities from food. YMMV.