In picture 3 above the new growth on the main cola sites is curled up and contorted. pH is a tiny bit high, TDs run off is around the 400-600 mark over the week. Humidity has been intense for weeks in the high 70s to mid 80s, I'm only watering to feed once a week. Help!
Hi there! This looks like a Boron deficiency. This is not a common thing! This may come from : 1) Incorrect pH and/or pH fluctuations. 2) Poor nutrients intakes. Are you watering with reverse osmosis? 3) Too much humidity resulting in a lockout, roots can't absorb Boron anymore. As for a solution to help her recover, you can mix a teaspoon of boric acid in 4 liters of water, and see how it goes. I'll be around, keep us up-to-date, and happy growing!
Hi @Stinkygorilla! Seems fine, I usually water with ~20% of the pot/container size. So in your situation, considering you're using 40L containers, I would use 8L. This should flow to the bottom of the pot, and give you a little drain (which can be useful if you want to check ph/ec). However this basic rule does not always apply, sometimes they drink more, sometimes they drink less. Keeping a close eye onto your plant's health will help in finding the perfect amount of water depending on their current stage/health/temp..Hope this helps, keep us up-to-date and happy growing!