Please help me, I have a problem

d4money1

d4money1

Active Member
I'm on about week 4.5 of flower with my White Widow plant and I am experiencing what seems to be like a huge cal deficiency but I am added the recommended amount of cal mag (1 tsp/gal) to distilled water everytime I water. The leaves are yellowing with tiny circular brown spots on the leaves. My plants are about 3.5 ft tall and I water them with about a gallon per watering. Is this not enough? Thank you.

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PJ Diaz

PJ Diaz

Well-Known Member
Is it just happening to the older fan leaves? If so, it's ok and fairly normal to happen late in flowering. If not, have you checked your ph lately? Could be a lockout.
 
d4money1

d4money1

Active Member
PJ Diaz said:
Is it just happening to the older fan leaves? If so, it's ok and fairly normal to happen late in flowering. If not, have you checked your ph lately? Could be a lockout.
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No it is happening to new growth as well...it just happened after my last feeding where i changed from FF beastie bloomz to cha ching powder on the feeding schedule i believe. the tips are browning on new growth (which had led me to believe nute burn at first) but then suddenly all my leaves started getting tine brown circles and then started to yellow and are dying.

Also on some of my leaves that havent yellowed yet they have patches of light green along with dark green.
 
d4money1

d4money1

Active Member
Ringsixty said:
Normal sometimes to see older fan leaves to do this
Check you Ph.....for lockout
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I have a rapidtest soil probe meter...its registering around 6.8 which seems about right considering im using FFOF/Light warrior mix which usually has good buffers in it.

I also have the test where you mix water and soil and let it sit for about 30 minutes. Im gonna try that next.

I was going to get some dolomite lime today anyways because i had a feeling id run into PH problems. how much should i sprinkle on the top of my soil and water it in? I think im gonna flush the plants and and then sprinkle the lime on top and water it in with the last gallon of the flush..
 
lahadaextranjera

lahadaextranjera

Well-Known Member
Hi there, you have a def in P and K. Did you start to increase the P and K when they started to bud?

Good that you added the Ca/Mg but too much Mg locks out P & K. Keep the PH at 6.5 for now. If it is Mg this will be released at this level but not lower.
 
W

Wytemink

Member
If the curling resembles a "ram's horn" then it is probably a K (potassium) deficiency. You have been giving them lots of this through Beastie Blooms or ChaChing, but the problem is with the uptake. The plant is having trouble taking it in likely because you have been giving it too much CalMag (Mg will lock out P&K), so this unused P and K is building up as salt in your soil.

Another possibility is that your PH meter is inaccurate. Don't trust the Rapitest Soil PH meter too much, you should really be measuring your nutrient solution - I bet it's high. Try to get it down to between 6 and 6.5, if you are in peat based soil, like ocean forest. Hope this helps!
 
d4money1

d4money1

Active Member
Wytemink said:
If the curling resembles a "ram's horn" then it is probably a K (potassium) deficiency. You have been giving them lots of this through Beastie Blooms or ChaChing, but the problem is with the uptake. The plant is having trouble taking it in likely because you have been giving it too much CalMag (Mg will lock out P&K), so this unused P and K is building up as salt in your soil.

Another possibility is that your PH meter is inaccurate. Don't trust the Rapitest Soil PH meter too much, you should really be measuring your nutrient solution - I bet it's high. Try to get it down to between 6 and 6.5, if you are in peat based soil, like ocean forest. Hope this helps!
Click to expand...
I measure both my nute mix and my soil with separate ph meters made for soil and another one for water. I think im gonna just flush today. May have lockout from the cal-mag & added unsulfered molasses. I use it with every watering. Should I not use cal mag every watering? even with distilled water?
 
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