tropicanna
Member
Thanks for the diagram stoned-trout. I'm pretty sure it is a potassium deficiency what caused the liming, cause the leaves involved are older leaves and they are localized in the center towards the bottom of the plant, nothing else is even liming.The liming of these started at the end of veg, siever is right in that they were the ones to receive the least sunlight as the pre flower stretch started.None the less I'm sure there was deficiency and it had nothing to do with nitrogen because once they turn yellow the get the rusty spots near the margins.I started watering with epsom salts at that point and that didn't seem to stop the liming. I happened to run out of KSO4 at that point so I went as far as using a few grams of salt substitute which is 60% KCl as a quick fix while I could get a hold of more KSO4 and it did stop the progression. A few days later the new growth on the tops looked a bit lighter leading me to believe maybe it was nitrogen that was running out, so I added some guano.A few days later the first stigmas popped up and a couple of days later the liming and subsequent yellowing resumed, that's when I knew I couldn't waste more time and I had to get that KSO4 A.S.A.P..I could've tried adding more salt substitute but aside from the KCl it also has two forms of insoluble potassium phosphates and fumaric acid which i'm not sure the plant would've been fond of in greater amounts.I'll be monitoring the bottom and might add a few couple more grams of the KSO4 on saturday, tomorrow i'm starting them in a braggs liquid aminos and molasses regimen to see how they respond.
