Started feeding on day 39/40 when runnoff was at 950 1st: Cal-Mag and GH Trio at 1/4 strength first feeding 6.17/950in 6.15/1210 out. 2nd RO with cal-mag @ 6.19/400 in x 6.21/1080 out , 3rd feed was 6.28/1010 in 6.15/1080 out. 4th was straight RO in 6.26/688 out. 5th: 6.25/1080 in 6.12/1090 out.