Gorilla Glue (Fastbuds)+ Quantum Boards

WEEK 10 Day 65 - Today I flushed the plants with a drenching to 20% run-off of 2.25ml/L of FloraKleen added to PH'ed tap water (PH 6.3). This product is designed to release any nutrient build-up in the coco, and hopefully will reset the pots so I can give them a fresh start nutrient-wise. I gave each pot about 4.2L of solution each, with about 1L of run-off from each pot. The PPM of the FloraKleen solution was 250ppm (which is the PPM of the tap water, so it appears FloraKleen doesn't have any salts in it). The PPM of the run-off was around 650-750. I'm going to leave them for a day or two, and then give them a 75% strength feed and see how they go. They've been getting a bit light in colour lately, so I'm not sure if I've been underfeeding them. The run-off PPM has been increasing by 200 per feed for the last several feeds. That's even after dropping the nutrient strength from 75% to 50%. I'm a bit confused, because the plants seem to be behaving like they aren't getting enough food, yet the run-off PPM levels seem to suggest they aren't consuming all they are getting. At the moment I'm pretty much guessing as I go along. Given the plants have only got another 3 weeks or so to go before harvest, I'd like to make sure they have enough energy to pump up their buds before they are harvested. I guess we will see if a 75% feed after this flush is too much or just right after its done. I wént through the plants after the flush and gave them a solid defoliating and removed most of the sugar leaves, this has left pretty much all the bud-sites exposed to light now, and the tent looks great as all the buds are visible now and I have to say, despite the fact the plants aren't anywhere near the weight and size they could have been, it is still a gorgeous sight to behold. Day 66 - The plants seem to have responded well to the flush. I think I will feed them a 75% strength feed tomorrow. Day 67 - My wattage meters arrived today. They are fantastic and they were extremely simple to install as they are just placed inline, in between the main power cable and the light. I can now see the wattage the light is running at without having to reference the wattage meter I have on the main power supply to both tents. It also looks cool. You can see it in the group shot from day 68. Given the low cost of these meters I'm surprising they aren't more common and that HLG don't build them into their branded lights. It should be on the list for every QB user I think! (they cost $7 USD each on eBay, from china). Day 68 - Fed the plants with a 50% strength solution. Feed them 3.8L each. They had about 10-20% run-off. Solution had a PH of 6.3 and a PPM of 846 (EC 1.68) The run-off had a PPM of 1050. I also lowered the lights by 5cm to a height of 45cm above the canopy. After doing some more research about how/when to feed plants when using coco I've decided to switch from watering based on a wet/dry cycle (that typically saw me watering every three days) to a daily watering schedule. I will still water to 20% run-off. The research I did last time seemed to suggest periodic watering was best, but after this latest research I found many people water daily. This seems like it would have a lot of advantages, including being able to track the run-off PPM levels each day. This should allow me to dial in the nutrient levels much better, and should stop nutrient concentration level swings in the pots that must be occurring during the wet/dry cycle. I wish the advice out there was more consistent LOL. I'm also switch my Zkittles grow to daily waterings. Day 69 - Fed with 50% strength nutrient solution. Ph=6.1 PPM=780 EC=1.6 Temp=12c Volume given 15L. Runoff PPM=860, EC = 1.6 Volume runoff = 7.5L - Total amount fed to each plant is 930ml. Runoff per plant = 930ml per plant. Day 70 - No feed. End of week 10!