Solid week, working on dialing in automation system. I was out of town for the weekend and it was really cool to be able to check on pH/EC while I was away. New batch of nutrients with less mega crop and a little more Liquid Cool Bloom for PK.
Fall weather means the humidity has dropped. I was seeing temps of 75 in the tent with humidity as low as 25%. After doing some digging, this is definitely not ideal in terms of VPD. In the short term I've been spritzing the leaves with some water once or twice a day to keep humidity around 40%. Seeing some brown tips from what looks like light burn. Sounds like this is expected if VPD goes too high, so hoping it will go away with higher humidity and/or lower temps.
Not sure if I'm going to have to harvest part of the plant first - some stems have 5 petal leaves and almost no pistils left. No amber trichomes, but otherwise look almost ready. Two new branches have been growing quickly. These have 3 pointed leaves, lots of pistils, and the flowers are much less mature. Is it possible for a plant to have a genetic mutation only in some parts?
How often should I re-calibrate my PH pen? I have a cheap Milwaukee pH600 and after 3 months of use it had drifted enough to cause real damage (was reading 5.8 when chemical drops read ~4.0). Alternatively, is there a reasonably priced option that would avoid this?
Calibrate your meters monthly is whats generally recommended. I don't personally do that because i am lazy. I usually calibrate before the start of a new grow and then just ride that through. After awhile you will get to know where your water sits and what you need to add to get the pH in range. You'll get familiar with the routine and will spot something out of wack if it's severe. Slight changes like 0.2 are hard if not impossible to detect. That may not seem like much, but with a pH of 5.8 when it's actually 5.6 because your pen didn't read accurate can cause an issue in nutrient availability.
Rinse off your pH meter after use with tap water. Don't touch the glass bulb, ever. Shake the tap water off or wipe the plastic exterior, then place the cap back on the meter. The glass bulb can not dry out so get yourself some storage solution to pour into the cap. Some people use tap water which i don't recommend. Probe storage solution is reasonably cheap, and is designed specifically for 1 purpose and will last you years.
Edges of leaves on some branches are turning yellow at week 9 of flower - does this look like nutrient burn? light burn? heat stress?
Lower leaves seem to be effected too, so I'm thinking not light burn?
Super high N locking out K. possibly high N and low K.
Glossy is the N - the leaves are very shiny it seems. The burns around tips is the K deficiency (one way or another).
@Lemonhazelover, my gardeners hand isn't so good that's why I have to automate most stuff lol. Appreciate it though, I'm excited to see how this one turns out!
Wow buddy!! super nice buds
What an amazing grow so far - good job and well done 🤝
Happy Growing & cant wait for your upcoming weeks 🌱
Cheers, Bud Boutique 👩🌾💚
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