Blueberry OG in Coco + NFT

Day 50: There are so many renovations being made outside the box! Was even thinking of CO2 implementation with yeast and sugar, but it will be totally useless because of the powerful duct fan I’m using. Whatever ppm CO2 can yeast provide, the gas will be sucked out of the box within a minute. Need extremely large bucket of brew to give a little bit overall. The same story with CO2 cylinders, but also more dangerous in my conditions. Day 51: Gonna make 2 clones right before the lights go off. Will cut the lowest branches that are completely off the pace in comparison with others. I made a quite unpleasant discovery few days ago. Grow component was probably stored for quite a long period in cold conditions. It caused sedimentation of a fraction with Calcium. At first glance I thought that’s my mistake (remembering the accident when I used Bloom syringe to take Grow). There were just traces of Bloom on the needle, and I had doubts that it could be the cause. I threw out almost empty bottle, where I noticed the issue and bought the new one. Poured it into the glass jar immediately after opening, and noticed the same sediments floating in liquid, some left on the inner surface of the bottle. Luckily I have a magnetic stirrer! Took out some volume to avoid pouring out through the lid. Stirring for two hours dissolved all the sediments making the Grow component look like emulsion, which I assume is supposed to be, since there are extra Ca additives for Coco substrate (I’m using DualPart Coco). Recent sings of Ca deficiency which I had to compensate with CalMag is probably another proof of this theory. Will stir the rest of the volume left in bottle today and let it sit until next use. Hope next time just shaking will be enough 🙃. Will not change fertiliser brand or anything. I love T.A. nutrients! It’s amazing stuff. They are super concentrated and not much volumes needed to achieve great results. Just need to admit that “shaking well before each use” may not be enough sometimes. Works only if the fertiliser was stored properly from the date of manufacturing till the moment it was sold to the end customer. It doesn’t always happen in real world haha 😛. Temperature stays at incredibly stable 23-24 (73-75 F) degrees Celsius during the day, and 21-22 (70-72 F) degrees at night. Relative humidity doesn’t go higher than 55%. After the last defoliation and few renovations it stays at 50-53% day / 50-55% night. Runoff ppm stays at EC 1.7 (860 ppm) for two days with inflow EC 2.1 (1040-1050). Runoff pH is also stable 6.1-6.2, inflow pH 5.5-5.8 (morning-evening). That’s cool! I will not raise concentration to get runoff EC 1.8-1.9 (900-950 ppm). It should up by itself tomorrow after today’s pruning. Day 53: So much work to do. I even forgot to take a picture. New clones are planted into rock wool cubes with root riot. Should work well. I don’t have Clonex or any other rooting gel with hormones. Using Root Booster from T.A. only. Solution EC is 0.13 (65 ppm, x0.5 scale), pH 5.6. The older clones are facing huge Fe deficiency. I messed up pH when planting them into small rockwool cubes. Simply forgot to presoak them in pH 5.0, used pH 5.5. And I didn’t measure pH of the drained moisture, relying on my feeling. I suppose pH in the small cubes was much higher than 5.5 the day after I planted the clones. Then I was struggling with EC, found controversial articles suggesting different concentration. I even poured 300 ppm into the cubes thinking 60 ppm of Root Booster was not enough. Well, then I flushed the cubes with EC 0.12 (60 ppm, x0.5 scale), pH 5.3 Root Booster again to get back. I moved the entire box a bit away from the wall to use the duct exit that is located much closer to the chimney. Replaced the 125 mm one with a 150 mm flexible hose. Removed two 150 mm intake hoses, attached the black light-proof prefilter material to the rectangular intake window (17x40 cm) with velcros. Made it three layers. Light can be barely seen from outside the box during the lights are on. It’s pretty dark inside the room as well. I hope for no light leaks. Easy to clean this material with vacuum cleaner. Suction force is good, the air takes much shorter way to leave the box. ScrOG wood frame is prevents the walls from being “sucked in”. Temps are 23/20.5 degrees Celsius day/night. Humidity is 50-55%. Removed all timers and most of the wires out from the box. Mounted them on the wall. Preparing to move the tank out also. Day 54: 5 of 8 small clones rooted 😍 The last two big clones that took 2 days ago are looking good, but no roots yet. Day 55: 7 of 8 small clones rooted. Preparing coco/perlite for transplanting. Day 56: 8th clone doesn’t show roots yet. Probably that’s the one I forgot about when putting into rockwool. It was left without water for a minute. Will wait two more days. Defoliation done. Removed a lot of leaves and pruned. Accidentally lollipopped her. Will give her two days of rest and flip into 12/12. EC in runoff increased rapidly right after I covered all small holes in the slab that could possibly cause some salt build up on the surface due to evaporation. Also the plant surely reduced nutrient uptake after heavy defoliation. Inflow: EC 2.3 (1150 ppm), pH 5.6 Runoff: EC 1.8 (920 ppm) --> 2.09 (1044 ppm), pH 6.4