Flowki
Well-Known Member
I am currently using blumats with no run off so I think you guys may have some insight here. The medium is never getting dry, however I noticed some slight curling, and figured it was ph, so wanted to catch it early. I took them to a little manual run off and it was low, around 5.5 (ingoing 5.9 max ) This is week 4 or so, however they have been on around 50 elemental ppm of P over the last two weeks, due to the natural P in the base. I think the P has been building, As far as I know P will lower the coco PH.
I manually fed (about 1.3 ec) to run off at 6.0ph in increments, until the fresh run off was around 5.8. I did not want to use too low an EC, as to not upset the coco balance. As this is week 4, I would assume future build ups of P will subside due to more need for it, while I also intend to keep using 6.0 ph ingoing (rather than 5.8-9 ) to offset the reduction of ph from excess P. While 50 ppm P isn't a lot, I can see how it would build fast, and give a large ph drop over time. I don't mind running a little manual run off once per week to clear out any build ups and reset the PH to a decent range. Would it also be a better idea to set the normal blumat PH a little higher, to say 6.2 ph, and let the P build up slowly swing it down to around 5.8 by the end of the week?.
Is this the correct diagnosis and course of action, or would you suggest something else?
I manually fed (about 1.3 ec) to run off at 6.0ph in increments, until the fresh run off was around 5.8. I did not want to use too low an EC, as to not upset the coco balance. As this is week 4, I would assume future build ups of P will subside due to more need for it, while I also intend to keep using 6.0 ph ingoing (rather than 5.8-9 ) to offset the reduction of ph from excess P. While 50 ppm P isn't a lot, I can see how it would build fast, and give a large ph drop over time. I don't mind running a little manual run off once per week to clear out any build ups and reset the PH to a decent range. Would it also be a better idea to set the normal blumat PH a little higher, to say 6.2 ph, and let the P build up slowly swing it down to around 5.8 by the end of the week?.
Is this the correct diagnosis and course of action, or would you suggest something else?