cal mag foialge spray? for magnesium deficiency? need help

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Baker12356

Active Member
Altight guys the only reason im posting a new thread with this one is becauee its a specific flowering time question.... So first of all let me start by saying im planning on puttong her into flower on Monday if at all still possible, but my question is, i thought i was having nitrogen deficiency but was actually magnesium deficiency because of the green still staying green in the veins unlike nitrogen, but ive been soil feeding cal mag (1 tsp) for 2 weeks with 3 tsp grow big and 2 table spoons big bloom (just increased from 2.5 tsp grow big to 3 this week) and the magnesium deficiency still seems to be there and going to older leaves, not spreading fast at all but spreading none the less, so should i tru foiler feeding with just cal mag as well?
Soil - jiffy starter mix with perlite added (30 percent)
Ph of soil- 7
Lights- 400 watt mh veg then hps flower
And should i keep her in veg for another week?
Thanks!
 

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polishpollack

polishpollack

Well-Known Member
if you're giving cal mag for 2 weeks, it's probably not either mag or cal deficiency. did you know that 2 tablespoons is like 6 teaspoons? are you suppose to be giving that much fert? I'm wondering if you're giving too much.
 
phil k

phil k

Well-Known Member
Baker12356 said:
Altight guys the only reason im posting a new thread with this one is becauee its a specific flowering time question.... So first of all let me start by saying im planning on puttong her into flower on Monday if at all still possible, but my question is, i thought i was having nitrogen deficiency but was actually magnesium deficiency because of the green still staying green in the veins unlike nitrogen, but ive been soil feeding cal mag (1 tsp) for 2 weeks with 3 tsp grow big and 2 table spoons big bloom (just increased from 2.5 tsp grow big to 3 this week) and the magnesium deficiency still seems to be there and going to older leaves, not spreading fast at all but spreading none the less, so should i tru foiler feeding with just cal mag as well?
Soil - jiffy starter mix with perlite added (30 percent)
Ph of soil- 7
Lights- 400 watt mh veg then hps flower
And should i keep her in veg for another week?
Thanks!
Click to expand...
thats not magnesium deficient
 
phil k

phil k

Well-Known Member
its ph and a mix of no oxygen in your water and too moist of soil thats why its only your lower leaves. if you were having actual deficiency it wouldn't be showing that little on only a few leaves.
 
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Baker12356

Active Member
ohhhhhh that makes a lot more sense because I have had issues not with over watering but with the frequencies that I was watering, and not allowing the roots at the bottom to become all the way dry before watering again, so I have been correcting that. I have started to use the Lift method to determine when I need to water instead of just going by sight and by just putting my knuckles down 2 inches. So Phil k "its ph and a mix of no oxygen in your water and too moist of soil thats why its only your lower leaves. if you were having actual deficiency it wouldn't be showing that little on only a few leaves." So if you don't mind me asking how do I need to correct the Ph and add more oxygen in the water? Because I do let the water sit in one gallon milk jugs that I bought at Walmart..... And was I correct in saying that a magnesium deficiency does show in the leaves like a nitrogen deficiency but leaves some green imbetween the veins? Not sure how else to describe if I understand the magnesium deficiency correctly. And I am only giving 2 tablespoons of big bloom and have not shown any signs of issues, since I have increased the regiments up from 1/4 of the required nutrients at the beginning
Thanks!
 
B

Baker12356

Active Member
Oh and just one more question but do you guys think im fine with going into flower this Monday since this is not a deficiency?
 
polishpollack

polishpollack

Well-Known Member
you could put some more oxygen in your water by getting an aquarium air pump from walmart and plastic tubing and a blue air stone and pump air into the water for several hours before giving it to your plant. the only real way to get oxygen to roots is to let the soil dry out before watering again. if your pH is off it's because there is too much fert in the soil. the more fert you use, the lower the pH tends to drop.
 
dannyboy602

dannyboy602

Well-Known Member
There IS a mag def in the picture. Bleached interveined areas. The plant has little canopy imo and I think you should cut it back and allow it to veg for another month before you flip it. You'll get better buds that way. However if you're in a rush you can flip now but your yield will be very affected.
For the mag def a tbsp epsom salts to one gallon water and either drench or spray directly on the leaves for faster absorption. Or both. The plant is not very green in your pic. Whats your ph like? Did you add any lime to your soil mix?
If your ph is low you can add a tsp of lime on top of the soil and scratch it in. It'll green up your plant and add the mag at the same time.
 
B

Baker12356

Active Member
  • Yes, I found that my pH was actually very high in my water and I found that, that wouldn't allow for the magnesium the flow up the roots.... So i pH downed my water and Will be watering with cal mag on my next feeding..... But I found because of my last mistake of to frequent of watering I now have fungus gnats and will be having to buy food grade diatomaceous earth and calcium bentonite to put on top soil to get rid of them..... But I was wondering if the food grade diatomaceous earth when I am done how do I get ride of it, do I just pour more water on it when my next scheduled feeding is 48 hours after? And do you recommend more lst? the only problem is I am running out of space right now as it is........ So with that being said should I lst some more because I already have tie down spots in place with lst already working (on the lower branches just not to much) and then flower within a week or two? Also i dont know if its bag seed so i dont know if its male or female so could and should that put more emphasis on flowering early?
 
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