Day 35, plants are doing well.
I increased my 4 lights up to 100% a couple half days this past week. Timer kicked out for 2hrs on the second day. Weird as I run my lights at 100% early veg,18hrs a day, without issue. 5' away and I let the plants grow to the light.. Not stressing this atm.
I then set the outside lights to 100% and inside 2 lights to 75%. PPFD was around 1000 PPFD at the canopy. Usually, at this stage of flower, I grow with the light at 850PPFD with my outer lights set to 75% and my insides set to 66%. 4 bc blonde lights put out a very even spread of light with no hots spots the 4x8.
I do periodically push the light intensity a bit at this stage, to help get the right amount of light deep into the canopy for a few hours a day to help bulk up the lowest sites. I think it works, they seam allot harder..
After a full day at 100% and 75%, I also quickly saw my upper fan leaves starting to take a slight taco shape, indicating the intensity was a little high for too long... No burning, tho. This reminded me that it can't be high noon for 12hrs a day.. not with my setup.
I am going to cautiously push a couple days next week with my outside lights at 100% and my insides at 75%. I run the insides less % as the light overlapping has the ppfd very even.
I will try to Increase my humidity to 65 RH for the next week and set CO2 set at 1000. See if I can push for week 6.5-7.5 without causing stress. First sign of stress again, I'll ride it out at the last weeks 850ppfd then 650 PPFD then 400 the last 2 weeks..
At these settings and being week 6 of a 70 day strain, I'm expecting the plants to drink more and bulk up larger than ever. ..I'll test my coco before feed cycle to see if it it is drying out a bit between feeding..Decrease the volume per event and increase frequency as needed.
I also plan to do a flush at the beginning of this week. Monday using full nutrients flush to push out any build-ups of salts in the coco that might cause a nutrients imbalance moving forward.
Basically the flush will be..feed to runoff, wait 20 min, then feed another 10 gallons through all 8 plants until I get 10 gallons out the drain. Measuring the EC to be certain 1.9EC in, is 1.9EC out. I do the flush hand feeding with a 2 liter measuring cup and syringe the runoff from each plant.
Thanks, I used the Active Aqua Adjustable Flow Submersible/Inline Pump 800 GPH. I don't use any of the flow regulators from the bubbler. Wide open..back at the tank I put a small 90 deg elbow at the top of the to allow air into the line after it turns off. Stops it from siphoning..