The following foods: Milk, butter, margarine, real cheese, plain yogurt, most ice cream without gluten-containing add-ins. Vegetable oils, including canola. Plain fruits, vegetables (fresh, frozen and canned), meat, seafood, potatoes, eggs, nuts, nut butters, beans and legumes.
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.
I don't wait after eating, I eat breakfast then go swim 2-4 miles. I usually don't eat a heavy breakfast (usually only a bagel, or a protein bar) to help prevent getting sick , and muscle cramps while in the pool. If I don't eat before I swim then I'm worse off.