Yellowing in mid flowering
- Thread starter SchmoeJoe
- Start date
SchmoeJoe
Well-Known Member
Sorry about the late response. I've been working a lot lately. We've been transitioning from using cutting edge solutions to the eco series for our base. I've also been using roots Organics surge, infinity, and oregonism for an inoculant along with peak during peak bud growth. I'll have to check the ppm's on the feed and run off when I get back to work tomorrow. The pH has been dropping quite a bit from the feed to the run off so I've been watering at around 6.8-7.0 to get the run off around 5.8.
The co2 starts off at 550ppm for a one week veg after moving the plants in and then goes 50ppm every Monday and Thursday until we hit 1000ppm until the last two weeks. Then it's stepped down 200ppm twice to be at 800ppm the seventh week and 600ppm the last. Temp and humidity are at different set points depending on strain and stage of flowering but it's always in the proper range. Here's a pic filtered through my corrective glasses. Pic is also from a different strain and room. I honestly think the cause is from not using a transitional feed ratio during the stretch. I've never ran a garden with a heavy salt based feed program (i just added the tea myself), let alone augmenting co2 and having absolute control over temp and humidity. That said when I first started seeing early yellowing like this in my own gardens I just prevented it with the transitional NPK ratio and a dose or two of cal-mag during the stretch.
Nutty sKunK
Well-Known Member
Too much P can yellow the leaves early. Just as too much K can acidify the soil.
Low N yellows from the very bottom upwards. Looks like it’s starting at the middle.
Low N yellows from the very bottom upwards. Looks like it’s starting at the middle.