Your additives are gonna have a slightly different ec than the corresponding silica and drip clean. Are you supposed to run pekacid at 1 ml?Dang my 6/9 never reads above 1.2 ec. The batch I mixed today read 1.1ec. My well water is .2 ec. I also add 1.5ml agsil and 1ml peKacid. I test my bluelab with 1000ppm calibration solution so I know that is accurate.
Ya I think I agree, I hand watered coco with light runoff with drip clean and liked it. The next one I did even less runoff and no drip clean and that was too little, salt buildup, not bad, but it was there.Yes, I think it wasn't accumulating because I was getting at least 20-25% runoff hand watering once a day. I even remember in head's thread he said he was getting very little runoff, a trickle if anything. So yes, it was causing me to chase a higher ec overall. It make sense to me. I also hated emptying all the runoff everyday after I water since my tray sits very low so the amount of runoff I could keep around is about 2-3 gallons per 4x8 tray.
Do you have a thread for your grow? can't remember if I had only seen it here.