Approximately 10% of patients report an allergy to penicillin. However, the majority of patients (greater than 90%) may not truly be allergic. Most people lose their penicillin allergy over time, even patients with a history of severe reaction such as anaphylaxis.
Additional lighting equipment is often necessary to compensate the low levels. Earlier it was common with light levels in the range 100 - 300 lux for normal activities. Today the light level is more common in the range 500 - 1000 lux-depending on activity.
Average lifespan is 700 hours. Fluorescent grow lights have a low heat signature and produce a decent spectrum of light for growing. Tube lights or compact fluorescents in a reflector are both available. Lifespan averages 10,000 hours. LED grow lights offer the latest technology on the market today.