troutfarm
Well-Known Member
Plant info... Northern Lights, 5.5 weeks into flower, LED grow lights, FFOF soil mixed with perlite, 3-gallon fabric pot, water about twice a week, feed every other watering, feed with FF Big Bloom, Tiger Bloom, and Grow Big following their schedule (usually mixing half strength), and added some Cal-Mag at various times to help combat problem below. Also used Great White mycro early on and throughout veg.
So about 3 weeks ago I realized I was making a major amateur mistake with this grow for many weeks. I was adjusting the water ph before adding nutes! Silly mistake. And through later testing it seems that on at least 3 or 4 feedings I most likely had a ph below 6.0, a time or two maybe way lower. When I realized the mistake 3ish weeks ago I immediately went into damage control and flushed with proper ph water, and used cal-mag and light FF nutes to deal with what looked like deficiencies.
I'm still an amateur but the damage from the beginning seemed like a Cal-Mag deficiency, which made sense since my ph was lower than 6.0 a few times putting Calcium and Magnesium outside of root absorption (at least according to a chart indicating which nutrients adsorb best at a given ph range).
So here I am, 5.5 weeks into flower, and although the flowers look pretty decent to me, the fan leaves are decimated and the damage is starting to get into the larger sugar leaves. My question is, now what?? Do I stay the course, water twice a week with nutes every other while keeping ph right and hope she makes it to the end? Or does anyone have any other ideas? Sorry about the long post. I thought I could get this girl back on my own over the past weeks but every time I walk in the room she's a little more beat up. Help please.
So about 3 weeks ago I realized I was making a major amateur mistake with this grow for many weeks. I was adjusting the water ph before adding nutes! Silly mistake. And through later testing it seems that on at least 3 or 4 feedings I most likely had a ph below 6.0, a time or two maybe way lower. When I realized the mistake 3ish weeks ago I immediately went into damage control and flushed with proper ph water, and used cal-mag and light FF nutes to deal with what looked like deficiencies.
I'm still an amateur but the damage from the beginning seemed like a Cal-Mag deficiency, which made sense since my ph was lower than 6.0 a few times putting Calcium and Magnesium outside of root absorption (at least according to a chart indicating which nutrients adsorb best at a given ph range).
So here I am, 5.5 weeks into flower, and although the flowers look pretty decent to me, the fan leaves are decimated and the damage is starting to get into the larger sugar leaves. My question is, now what?? Do I stay the course, water twice a week with nutes every other while keeping ph right and hope she makes it to the end? Or does anyone have any other ideas? Sorry about the long post. I thought I could get this girl back on my own over the past weeks but every time I walk in the room she's a little more beat up. Help please.
The same way you have to flush with about 3 times the volume of your medium to correct ph/toxicity issues..you'd need to dump a whole lot of sulfates, and/or aluminum to get the ph to stay down at 5. The ph close to the roots, doesn't change drastically...hence why runoff is not very telling in what's happening by the roots.