Red Hot Cookies

Not so vigorous grow this week. Added rice hulls mulch to help retain water in the top soil. RO water seems to be being a bit detrimental in the micro nutrients department. Apparently zinc deficiency, specially in the top right plant, something calmax won't fix. My tap water is 900 ppm, it's so hard that everything gets full of scale from my cats water plate to even the surface of substrate in houseplants pots. That's why I'm being using RO water. Last watering was using a 50% mix of tap water and RO water to increment mineral contents, also decreased ph to 6.2 to improve zinc absorption. Also increased Bio-Grow dose to 2mL/L as some phosphorous defs were appearing too. Last watering was on day 48 and you can see a noticeable new growth in day 49.