Day 1
ORP (DSB) = 270mV +/- 10mV
pH (DSB) = 7.29
Drip rate = 0.83 drops/sec
Notes: ORP gradually climbed back up from the initial drop when sand was added. Not sure why this is but I'm thinking may have something to due with flushing out whatever may have been in the sand. Sand was rinsed and stored in a bucket for several week before use.