Gorilla Breath, LSD, Master Kush

This week I learned a lot. It started on Monday or Sunday when I noticed my leaves with new growth on my back left plant we’re getting the tips burnt. Originally I assumed it was light burn since the lights were only 15 inches from the plants. After moving the light up 4 inches and seeing no change I began investigating further. I determined that based on the yellowing, falling leaves in the lower section of the plant, I was suffering from a magnesium deficiency. This at first was hard to accept since I’ve been feeding them cal mag for the last few weeks as needed. Upon further investigating I determined that my ph run-off was sitting around 5.1, which in a soilless medium like my pro mix is unacceptable. Further research confirmed that the ph should be between 5.8-6.2 as I had suspected, cannabis thrives in a slightly acidic environment. I immediately flushed the sick plant with RO Ph-7 water to bring the ph in the soil up. Initially it only came up to 5.7 but I was happy with that as I didn’t want to risk downing the plant either. I left it for a day and then I got nervous because I’ve been treating all my plants the same since day 1, I flushed the other 3 plants and determined they all had a ph between 5.1-5.3. All way too low. Once I finished flushing all my plants and bringing the ph back up to an acceptable range I started doing more research and tests of my own. First thing: cannabis will not absorb nutrients properly if the ph in the root zone isn’t within prescribed ranges. Hence my my deficiency. Second thing: even if you’re using ph perfect nutrients, they don’t always come out ph perfect: I tested my whole batch, then just micro grow bloom and both batches were hitting 5.1-5.3 which means all the feeds for the last 2 months were low ph minus the first week when I tested the ph. ALWAYS TEST YOUR PH It’s a tough lesson to learn, I will have to accept the lost harvest amount more related to stressing my plants with a mg deficiency that I could have coughs early on it I had just monitored my ph levels. Stay blessed and happy growing 😎