I've recovered from open heart surgery - colloidal silver will become your best friend in preventing and handling infection (is that what Nutrisilver is Arrow?) It has been used for centuries as an extremely effective antibiotic that doesn't kill all the good bacteria in your body like anti-biotics will do.
If you are given antibiotics, make sure you take a good probiotic, such as Dr. Ohira's 12 plus probiotic.
...Another one of the benefits of probiotics is that the bacteria strengthen the immune system. Because of this support to the immune system, they have been used in alleviating allergies, chronic fatigue syndrome and systemic candida.
And good to hear that you're starting blue-green algae because it is one of the most nutritionally complete "superfoods" available. Your body will need all the nutrition possible in order to repair and heal itself... good going!