B12 is a pretty common vitamin deficiency, impacting up to 15 percent of the general population, per the NIH
Obeid R, Andrs E, eka R, Hooshmand B, Guant-Rodriguez RM, Prada GI, Sawek J, Traykov L, Ta Van B, Vrkonyi T, Reiners K, The Vitamin B Consensus Panelists Group
Headloss Rate (psi/day) = (Current Headloss Previous Headloss) / Days Since Last Backwash Example: Headloss last backwash: 2.0 psi Current headloss: 8.0 psi Days since last backwash: 10 Headloss Rate = (8.0 2.0) / 10 = 0.6 psi/day Sudden spikes in headloss rate
All studies have been conducted using 80 g4 mg/kg/day and ranging in a wide spectrum of lengths (weeks to months) and routes of administration