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kushtrees
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Ive been using the jacks, cal nitrate, epsom salt combo for awhile now, but I have been battling large pH swings for awhile, its gotten so bad that I will pH the res to 5.6 and in 24 hours its up to 6.2 (DTW btw).
I am using the 3-2-1 ratio at 60% with 2.5ml/ gal dynagrow protek, as well as fulpower and root excel (but I doubt those last 2 are causing the pH swings); this comes out to 1.2 EC. Run off is at 1.1 EC and currently at a pH of 7.3....
I am going to loose the silica next week to see if I can get the pH in the res to stabilize, I also plan to flush the medium really well to try and get a clean slate in there so to speak. After that, assuming that things stabilize and the plants start to look a little better, I plan to bring back the silica at 1.25ml/ gal and see if that will keep a steady pH.
Has anyone else experienced massive pH swings when using silica and Jacks? My guess is that the lower than usual EC with the normal dose of silica is the culprit here, but I wanted to see if anyone else has any ideas or has seen this before.
PS I am using 2 kinds of chow, 1 group is in 80/20 growstones coco, the other is in 80/20 growstones SS4.
I am using the 3-2-1 ratio at 60% with 2.5ml/ gal dynagrow protek, as well as fulpower and root excel (but I doubt those last 2 are causing the pH swings); this comes out to 1.2 EC. Run off is at 1.1 EC and currently at a pH of 7.3....
I am going to loose the silica next week to see if I can get the pH in the res to stabilize, I also plan to flush the medium really well to try and get a clean slate in there so to speak. After that, assuming that things stabilize and the plants start to look a little better, I plan to bring back the silica at 1.25ml/ gal and see if that will keep a steady pH.
Has anyone else experienced massive pH swings when using silica and Jacks? My guess is that the lower than usual EC with the normal dose of silica is the culprit here, but I wanted to see if anyone else has any ideas or has seen this before.
PS I am using 2 kinds of chow, 1 group is in 80/20 growstones coco, the other is in 80/20 growstones SS4.