LX-140 WITH 14,000 BTU AC AND 14,200 BTU HEATER. Yes I know its pricey at $419.89 but when you think what even a portable air-con is going to cost you, this all in one heater / air conditioner / fan and dehumidifier will cover all year round climate control for your grow room. One thing that really makes it stand out is its big capacity dehumidifier (60 pints).
The person should pass out in 6 - 20 seconds. Depending on the person, irreversable brain damage will begin somewhere around 4 to 6 minutes. At 7 minutes, the brain will be dead but the drowning person missed it all as they passed out at 6 - 20 seconds.
Drowning in Fresh Water or Brackish Water: In drowning in fresh water (0.6% NaCl), water passes rapidly from the lungs to the blood, leading to haemolysis and dilution of the blood, with an abrupt increase in blood volume. 2.5 liters or more of water may be inhaled and absorbed in three minutes.