Calcium and Magnesium deficiency?

[pico]

I have two strains that I just started in a new organic soil mix. Here they are transplanted in to 1 gallon pots bare root out of EZ cloner. dual 400 watt light. There is Blue Skunk and White Widdow.





I chose 16 of each to go on to 3 gallon pots. This is 9 days after above picture. I also put them under two 1000w hps lights. Sealed room with full CO2 control.





ok now 14 days after the above photo here is how everything looks.






So things have been growing like crazy.But in the last week or so I have noticed the new growth on the blue skunk is having some trouble. It came on fairly slowly but is getting worse. I am thinking it could be calcium deficiency. Whatever it is it has to be an immobile nutrient as it is only affecting top new growth. bottom growth looks nice and healthy. photos taken same time as above.

Here is the widdow. The widdow looks like it has more of a magnesium deficiency but maybe some calcium problems too.

It should be noted that the blue skunk got some pure blend pro grow and some sweet and liquid karma while the white widdow i forgot to add the sweet. So I am thinking that neither of them got enough calcium and the widdow didn't get calcium or magnesium.

This is what I am thinking. Does anyone agree with me?

I have some prilled garden lime that I am going to add to soil and then use Sweet as needed if we decide this is Calcium/Magnesium.

Thanks for the help.

 

[10k]

I totally agree with your findings and plan of attack

 

[Guest]

I think you are right on with your thoughts......

I think you are right on with your thoughts......

I suggest change out the reservoir and get some cal-mag and add in to the fresh reservoir. This will also help rull out a lock out problem if it happens to exist.

Peace

 

[pico]

Thanks 10k. I just needed some confirmation.

Bree- I am running an organic soil mix so no resevoir. I just used some of that pureblend pro grow at 7ml per gallon for 1 feeding as a boost. That was a few waterings ago. I don't use CalMag because I didn't like the way it worked.

 

[Blackvelvet]

You did not add dolomite lime to your mix before planting? Surfaced applied lime is not as desirable. Good lime rate to try is 1 teaspoon dol. lime per gallon on surface of soil. Ph is going to go up. This might not be desirable of soil ph is already high from high ph water for example. Before adding anything, I suggest you test soil ph. Water container. Allow to sit for a half hour. Apply some distilled water. Get a slight runoff. Test that ph. Adjusting the fert water ph after mixing prevents ph surprises. Pbp grow is low in cal mag but has plenty if you are also using dol. lime. Epsom salts and gypsum are an alternative to using lime and will not raise ph.

 

[Guest]

Cal-mag plus will clear that right up!

 

[MynameStitch]

like everyone has stated here........ I agree 100%

cal mag should clear it right up I would also keep track of the lights, the tops look like its getting some radiant heat and when you have different strains growing, you are going to have differences in care nutrients heat tolerance and ect........

sometimes magniseum deficiency remind me of iron issues but yours is a clear magneisum issue, iron sometimes tends to take on the same look untill it gets worse and the veins turn yellow and the tops are affected where with magniseum deficiency the middle to lower part is affected on younger plants and older plants tend to be the middle top parts

 

[Guest]

Pico.... look at the wisdom above........

Pico.... look at the wisdom above........

Cal-Mag is for soil too.
You can flush the soil instead of changing the reservoir. Sort of a clean start.

Your plants look nice cept the small, easily fixable problem. Hang in there you will have some nice stuff here soon...... Keep it green.

Peace

 

[pico]

BlackVelvet- This is a premade soil mix by a local company. Supposed to be incredible stuff. I think they used Oyster Shells instead of Dolomite lime. The first ingrediant is also COCO so I think it is also more prone to calcium and magnesium problems. They told me not to add anything and so I didn't. I will be scratching some Calpril in to the surface but am also transplanting in to larger pots and then under 2 more 1000 hps so I will add dolomite lime to the soil mix then. Ran some water through them last week and runoff was 6.5 I believe. I use teas that are low in pH so I don't think I will have any problem with too high pH.

MynameStitch- I have a gallon of CalMag+ but have been staying away from it in my soil because I was having problems with it. It is a bit chunky and it may have gone bad. The blue skunk is deffinately more sensitive to radiant heat than the widdow. It seems to tweak the top leaves a bit even with the light 2 feet away. It also likes lighter nutes. But look at the growth rate compared to the widdow.

Bree- Yep I flushed a bunch of water through them a last week just to make sure it wasn't some sort of overfert. The symptoms were very light then. Now they are more pronounced. They really want some more cal and mag.


Yeah overall the plants have been doing great. I am showing the worst of it above just to make sure I am correct on my thinking. Just tweaking a new soil mix that I found.

I appreciate all the responses.

 

[guineapig]

Sometimes pH problems are more noticeable in smaller containers......do you think
it is possible to transplant to a slightly larger container? then you could give the plants a good thorough watering (kinda like a flush), and then transplant into a 1.5 or 2 gal container.....this should foster lush growth for the budding period.....

what do you guys think of that? is this possible at this time?

also i would steer clear of botanicare's Cal/mag product- try another company first-
i just think botanicare's cal/mag product is not very good, that's just my opinion....

yer pal guineapig

 

[Mackawber]

I put a little prilled dolomitic lime in my soil but I may want to add a little more using it as a top dressing. The lime is rather chunky so I took a hammer and smashed it into powder and finer bits. I will top dress it onto the soil and then water it

I want to prevent Ca and Mg problems.

 

[pico]

guineapig- Actually they are in 3 gallon pots right now. I was going to flower directly in these, but I decided to double the pot size and double the light so I will be uppotting again. I also don't like Botanicare CalMAg which is why I am not using it.

 

[Blackvelvet]

Trouble up top without burn on the tips and margins of the leave = micronutrient
trouble. Try a lower ph than 6.5..........

 

[pico]

actually calcium and magnesium uptake is best at pH above 6.5 in soil.

 

[guineapig]

oh they are in 3gal pots my mistake......

another wise soul who thinks the same about Botanicare's CalMag/CalMagPlus.....interesting....

one other thing is you can give your plants a good misting with mineral water.....i recommend a certain brand called "Sanfaustino".....it is high in Calcium and Magnesium and the Carbonation (CO2) is also good for plants......if you don't see that particular
brand of mineral water, just check the label of the bottle for the calcium and magnesium percentages.....

i think they will perk up after a good misting.......has anyone suggested this to you yet or have you thought about this avenue?

kind regards from guineapig

 

[pico]

I have heard that it is hard to keep calcium and magnesium together in the same bottle. Even GH keeps Ca and Mg in seperate bottles with flora series nutes.

I was going to foliar feed with something tonight. can you foliar feed with liquid lime?

For Magnesium I have epsom salts, Botanicare Sweet (can you foliar with this stuff), Mineral Matrix...

 

[Guest]

Guinepig....

Guinepig....

Why don't you like the cal-mag? The reason I am asking is I just bought a large container of it because I had heard so many good things about it. Hope I didn't waste the money. Would appriciate your opinion on it before I put it in my reservoir. I am using the Lucas formula and adding Advanced's overdrive. Plants look great but many have said the GH three part is a bit low in the cal-mag. What do you think? Do you use something different or just think it is not necessary? Always willing to listen to more wisdom.

Peace

 

[MTF-Sandman]

^^It's good stuff Bree...definitely not a waste of money. I'm thinking your jug probably went bad pico if it's chunky....my jug has an apple cyder color to it and no chunks

 

[sophisto]

Interesting Mineral water as a foliar feed plus the added benefits of Co2? I would if you were gonna try this make sure the sodium content is really low...An old timer I know swares by seltzer for his outdoor girls, says on non windy days the fog of Co2 is so thick he chokes sometimes....The mineral water thing is nice though, Have you personally tried this?????

Good Luck with your ladies bro, I think it seems you have a clear path of what to try!!