Gorilla Zkittlez in mineral wool

Day 43: Inflow EC 2.1 (1050 ppm), pH 6.3, 460+400+300+4x200 ml (1960 ml) Runoff EC 1.57->1.51->1.8 (786->757->903 ppm), pH 5.2->5.4->5.2, 630 ml (32%) The last day of veg. The lights will go off 4 hours earlier today and turn on 4 hours later tomorrow. The midnight point will be the same. Defoliation. Installed ScrOG net. -------------------- Day 44/01: Inflow EC 2.14->1.9->1.72 (1070->955->860 ppm), pH 6.4->6.2, 320+2x300+3x200 ml (1520 ml) Runoff EC 1.85->2.18->2.55 (923->1088->1274 ppm), pH 5.4->5.2->5.2, 440 ml (29%) Noticeable spike of ppm in runoff. More than 0.2 mS (100 ppm) in less than 24 hours. It can be caused by a rapid change of light schedule (reduced DLI 25->16) and too early implementation of preflowering NPK with a higher CalMag dosage. Reduced inflow EC from 2.14 to 1.72 until she starts eating again. Hopefully pH in runoff will also rise up a bit and reach 6.0 soon. I'm pretty sure my previous calculations of Ca/Mg ppm in solution were wrong. Ca and Mg tests from Salifert showed that 1 ml/L of T.A. Calcium Magnesium adds about 40 ppm of Ca, and about 15 ppm of Mg, while overall ppm is 150. I don't know what is the rest 95 of 150 ppm, although NO3-test also showed about 12 ppm of N. If the test was correct, that means I misinterpreted the signs of Ca/Mg deficiency. From now I will add 1.5-2 ml/L CalMag. But still I can't rely on this data as a fact. Such kind of tests are not accurate enough for such purpose. They were designed for sea/ocean water, so other ions in specific concentrations can interfere the readings. Hope I'm not wrong this time. -------------------- Day 45/02: Inflow EC 1.72 (860 ppm), pH 6.2->6.5->6.4, 320+3x300+200+2x300 ml (2020 ml) Runoff EC 2.4->2.6 (1200->1305 ppm), pH 5.3->5.0, 450 ml (22%) -------------------- Day 46/03: Inflow EC 1.6 (800 ppm), pH 6.3, 320+300+2x350+250+2x325 ml (2220 ml) Runoff EC 2.5->2.37->2.4 (1254->1185->1200 ppm), pH 5.2->5.4->4.9, 505 ml (23%) -------------------- Day 47/04: Inflow EC 1.6->1.68 (800-840 ppm), pH 6.3->6.5, 360+3x375+275+2x325 ml (2410 ml) Runoff EC 2.24->2.03 (1118->1015 ppm), pH 5.3->4.9, 595 ml (24%) -------------------- Day 48/05: Inflow EC 1.75->1.8 (875-900 ppm), pH 6.3, 360+375+2x400+300+2x325 ml (2485 ml) Runoff EC 1.98->1.7->1.72 (990->850->862 ppm), pH 5.1->5.3->4.9, 600 ml (24%) Delicious smell in the tent. Sweet and soft. Loving it! Slab maintenance: removed dead tips of roots that came out of the slab cover through the drain cuts. Cleaned the surface of the tray with hydrogen peroxide. Some algae were presenting, but very few. The cube surface is covered with mostly trichoderma and some other fungus. -------------------- Day 49/06: Inflow EC 1.83->2.0 (915->1006 ppm), pH 6.3, 360+375+2x410+320+2x360 ml (2595 ml) Runoff EC 1.74->1.6->1.63 (872->801->814 ppm), pH 5.2->5.2->4.8, 600 ml (18%)