Potassium Deficieny or Nute Burn? Just wanting another opinion
- Thread starter JMek420
- Start date
Lucky Luke
Well-Known Member
My money is on Mag Deff.
thewanderingjack
Well-Known Member
could be zinc or iron as well though, maybe even molybdenum or chlorine... or boron excess... a pic of the whole plant, and desc of the advancement of symptoms as well as your set up (medium, nutes, pH, etc) will help people help better
Hmm. I see.
Well the tips were first to go brown/crinkly.
Bottom of leaves are slightly yellowish.
Leaf stems are purpling.
I use a mix of plain tap water (PPM ~130) with RO/DI water 50/50.
This brings my base PPM down to ~60.
I feed with DutchMaster GOLD add.27, silica, Grow A + B. I also add a small splash (5ml to 50 L) of CalMag + Iron
PPM is 460.
I just gave a quick foliar spray with PK+.
I use RDWC in hydroton.
I let PH drift between 5.5-6.5. Try not to adjust it too much.
Well the tips were first to go brown/crinkly.
Bottom of leaves are slightly yellowish.
Leaf stems are purpling.
I use a mix of plain tap water (PPM ~130) with RO/DI water 50/50.
This brings my base PPM down to ~60.
I feed with DutchMaster GOLD add.27, silica, Grow A + B. I also add a small splash (5ml to 50 L) of CalMag + Iron
PPM is 460.
I just gave a quick foliar spray with PK+.
I use RDWC in hydroton.
I let PH drift between 5.5-6.5. Try not to adjust it too much.
polishpollack
Well-Known Member
I have yet to see sprayed plants turn out well. so you're using three different kinds of water? why? is that ppm of 460 the total? that strikes me as being low. I'd consider raising that some, but never spraying anything.
Nah. Same water source. So both from my tap, which is town water.
The base PPM of my tap water is 130 ppm
I have a RO/DI filter which drips about 15 litres an hour. So generally I fill a big 25L drum with RO/DI water (0 ppm)
and I mix this with 25 L of straight tap water, because its quicker than changing my water over 6 hours if you get me.
This lowers the base ppm to about 60 usually. So its not as hard.
Yeah I just added more nutes, ppm is 550 now.
New growth is looking good. As far as I can tell.
Whats wrong with foliar spraying? I heard it was good for a quick deficiency fix. Especially as far as cal/mag/iron go
xmatox
Well-Known Member
Don't foliar spray huh.... I would love to hear this one. If you are doing it correctly, foliar spraying can be extremely beneficial. It's a quick and effective way to give any supplemental nutrients to your plants. There are many different combinations of foliars you can use. I don't use it in flower, although I have seen/heard people do it in flower for about 2 weeks. If you are spraying your plants with the lights on, you can damage the leafs. It is best to do it right when lights go off so the leaves have time to dry. There are plenty of threads here on RIU that can go into more detail of which foliar to use in a particular situation.
polishpollack
Well-Known Member
foliar is more risky, especially if you don't know how to do it properly. from what I've seen of those that ask for help in this online, they have sprayed but then come to a place like this asking why their plants are dying. is foliar really necessary? you can know what you're doing with ppm measurement in dwc and the growth is good such that you don't need to risk overdosing with foliar. but to those that do it right, more power to 'em.
xmatox
Well-Known Member
Oh ok cool, so you agree that there is a point to foliar. Thanks