palmero
Active member
Salt build up and PH?
Salt build up and PH?
Ok guys 1st thanks alot for all the valuable info in this thread.
I am experiencing fast yellowing older leafes with my outdoor Hempys, 5 weeks into flowering. @ the moment much worse than you can see in the attached picture. The yellowing climbs upwards.
First i tried epsom salt (1/3 Tsp a gallon); darker new leafes but no help for the older ones.
Measuring run off starting with 100ppm (0.5 conversion) and PH 6.0 resulted with different plants in a range between 400 and 1000 ppm(@ 0.5). PH of all plants was nailed @6.0.
The ppms could be salt build up but do you have any ideas about the PH result???
I am using mountain water PH 6.7 @ 50 ppm with GH Flora 0/8/16.
What to do? A good flush?
Thanks for your help.
Saludos
Salt build up and PH?
....This method requires regular flushing. I recommend you avoid letting the bucket go dry. Instead water with less water but more frequency. I water 4 times a day just until I see runoff coming out of all pots, then I stop the water - probably 30 seconds or so. It results in about 1/4 of the runoff I would look for if I was watering daily.
...
For example, if you start with plain water with a pH above 7 and add nutrients and correct pH to 6.2, and your runoff pH is 5.5. That means you must have had lots of salts sitting around that were mixed into your most recent watering so your recent feed not only had a pH out of range, but was too strong. If the pH rose to 6.8, your probably not feeding your plants enough.
The whole thing about allowing some runoff every time you water is to keep a stable pH. So, if you are putting in the correct pH and strength of nutrients every time, you don't have to worry about what is coming out in the runoff.
Ok guys 1st thanks alot for all the valuable info in this thread.
I am experiencing fast yellowing older leafes with my outdoor Hempys, 5 weeks into flowering. @ the moment much worse than you can see in the attached picture. The yellowing climbs upwards.
First i tried epsom salt (1/3 Tsp a gallon); darker new leafes but no help for the older ones.
Measuring run off starting with 100ppm (0.5 conversion) and PH 6.0 resulted with different plants in a range between 400 and 1000 ppm(@ 0.5). PH of all plants was nailed @6.0.
The ppms could be salt build up but do you have any ideas about the PH result???
I am using mountain water PH 6.7 @ 50 ppm with GH Flora 0/8/16.
What to do? A good flush?
Thanks for your help.
Saludos