roots_indoors
Member
My runoff PPM today after watering was around 880ppm. This particular plant was fed 4 days ago @ 713ppm. It's been given Fox Farm Big Bloom, Tiger Bloom, CalMag and a little bit of Grow Big (less than 25% recommended dose) when being fed. Today I watered with just CalMag, and had a 307ppm and a ph of 6.61 for the water. This plant is an autoflower at 5 days into week 6, being grown in a 3 gallon pot with Fox Farm Ocean Forrest. This plant is well into flower, and has been for about 2 weeks now. I typically water to about 20-25% runoff to try and flush out the soil a bit in-between feedings.
I am a little concerned, but the plant is not showing any signs of an issue other than the slight Cal/Mag deficiency that started showing on a couple leafs. Typically when I just give plain water with a bit of CalMag, I see my runoff PPM sitting in the 300's, sometimes a little lower. One of my other plants, I was able to get down to about 210ppm on the last plain watering. So seeing 800ppm+ in the runoff scared me a little. It's making me think salts are building up or something like that.
Admittedly, I have another plant that I started giving nutes a little too early (@ week 4) and it had a bit of a toxicity issues that I have caught and resolved thanks to a few members on this forum.
When I saw the runoff sitting at 880ppm after I initially watered it, I went ahead and mixed up another 2000ml of plain ph'd water that had a PPM of 180. I ran this through the plant and got down to 775ppm.
Is this concerning to anyone? The plant seems to be just fine, but it is making me want to skip the next feeding and just hit it with water until I see a drop in runoff PPM.
I have attached a few photos of the plant in question. The tops of the colas seem to be a lighter green than the rest of the plant, but the colas that are closest to the QB light have lightened out a bit, the bottom of the plant has not. I have been assuming this is due to some of the colas being 13-15in away from the light. I have raised it slightly, but I have other flowering plants that aren't as stretched out as this particular plant.
I am a little concerned, but the plant is not showing any signs of an issue other than the slight Cal/Mag deficiency that started showing on a couple leafs. Typically when I just give plain water with a bit of CalMag, I see my runoff PPM sitting in the 300's, sometimes a little lower. One of my other plants, I was able to get down to about 210ppm on the last plain watering. So seeing 800ppm+ in the runoff scared me a little. It's making me think salts are building up or something like that.
Admittedly, I have another plant that I started giving nutes a little too early (@ week 4) and it had a bit of a toxicity issues that I have caught and resolved thanks to a few members on this forum.
When I saw the runoff sitting at 880ppm after I initially watered it, I went ahead and mixed up another 2000ml of plain ph'd water that had a PPM of 180. I ran this through the plant and got down to 775ppm.
Is this concerning to anyone? The plant seems to be just fine, but it is making me want to skip the next feeding and just hit it with water until I see a drop in runoff PPM.
I have attached a few photos of the plant in question. The tops of the colas seem to be a lighter green than the rest of the plant, but the colas that are closest to the QB light have lightened out a bit, the bottom of the plant has not. I have been assuming this is due to some of the colas being 13-15in away from the light. I have raised it slightly, but I have other flowering plants that aren't as stretched out as this particular plant.
Attachments
Last edited:
