Cant diagnose (check pictures)

Hi team!

I had this weird leaves colour changing on my plants
Tents is 2x2x6.
Mars Hydro TS-1000(150w)
100% light 24” away from top
2x ww and 1x buba kush
Humidity 48-58%
Temperature 19-27C

2 air circulation fans and 6” exhaust fan.
Soil “tropical bat mix” 60% peat 40% coco mixed with light mix.
pH - 6.2-6.4.
Feed is biobizz grow 2ml/L(every watering) + cal/mag

First 0.3ml/L, second 0.3ml/L and then third when I seen leave colour change gave 0.5ml/L
Last week of veg.

after this I gave my plants
Biobizz grow 2ml/L + 0.5ml/L cal/mag.
(Also gave last 2 waterings 3L each, I know its too much but my pots are too big so not much run off ether, normally 2L each

Week later....
Lack of space maybe?




Dont give me answers with low cal/mag as its not the case, its more likely overfeed.

leaves are not reaching for light, not curling or other way round bottom is green and healthy just a top of my grow is spreading.

Question #1
Why leaves are changing what am I missing?
Does lack of space could effect leaves colour change?

Question #2
Could it be too much water? Or over feeding?
Or maybe too much light from Mars Hydro?
(100% - 24” away from top)

Question #3
Could bad air circulation effect it?
(As 1 small oscillating fan is moving air on top and the other is blowing from top corner to bottom)

Help me out Im about to flip to flower but I cant coz of this problem, please point me out what I cant see! Any advices or tips will help!

I was going to say developing magnesium deficiency but you have already allayed that. Good luck.

hotrodharley said:

I was going to say developing magnesium deficiency but you have already allayed that. Good luck.

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Hi mate
all I got is liquid cal/mag so far was adding 0.5ml\L how much more cal/mag would you give? And how often?
P.S. Dont want to spread my top as I never done it and afraid it just could hurt.
Thanks

420mlet said:

Hi mate
all I got is liquid cal/mag so far was adding 0.5ml\L how much more cal/mag would you give? And how often?
P.S. Dont want to spread my top as I never done it and afraid it just could hurt.
Thanks

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Don’t know that I’d give calcium but I would spray foliar with Epsom salts. 1 tablespoon unscented Epsom salt: 1 gallon of water. Finest mist you can spray. Tops and underneath leaves. Either just before lights on or right before they go off.

Mixture of potting mix with coco in higher ratio than 80/20 will never gonna work... These are two different mediums with different treatment, your is almost 50/50 (the worst scenario ever). I would say your medium is the culprit as coir is stripping all of your Mg cations leaving nothing for plant. Foliar spray with calmag which contains no or low dose of Nitrogen. Be carefull with the dose, they should handle full dose but better start off with half. Good luck!

Bukvičák said:

Mixture of potting mix with coco in higher ratio than 80/20 will never gonna work... These are two different mediums with different treatment, your is almost 50/50 (the worst scenario ever). I would say your medium is the culprit as coir is stripping all of your Mg cations leaving nothing for plant. Foliar spray with calmag which contains no or low dose of Nitrogen. Be carefull with the dose, they should handle full dose but better start off with half. Good luck!

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Thanks for help!

What is tropical bat mix for then?

I knew I was wrong with this but I ordered wrong soil so I thought its a good idea to use it so I mixed my “tropical bat mix” with “biobizz light mix”


What should I do now should I replant my plants and give another week before flower or should I leave it as it is and spray with Mg?

is it anything I could do with this cal/mag?
Its got 2-0-0 npk

Or should I just get epsom salt and do foliar spray?
foliar spray only in veg or could be done in any stages?

thanks for replying

Looks like it's definitely a Cal-Mag issue to me. I'm using botanicare Cal mag right now and if it was me I would hit them with 5 mils per gallon to straighten it out or foiler feed Cal mag I have done that in the past. I always run the max recommended dose of Cal mag in the beginning ( i run 50%coco 50% perlite) then once I get into flour I lower my doses but beginning of veg I'm usually hitting them with about five mils per gallon I have tried going less and I've had the same issue you are having now. Its a quick fix if u act fast

WW is a big, big plant. For future grows 1 ww is plenty for a 2x2! Assuming they are photos

tylerzigzag9029 said:

Looks like it's definitely a Cal-Mag issue to me. I'm using botanicare Cal mag right now and if it was me I would hit them with 5 mils per gallon to straighten it out or foiler feed Cal mag I have done that in the past. I always run the max recommended dose of Cal mag in the beginning ( i run 50%coco 50% perlite) then once I get into flour I lower my doses but beginning of veg I'm usually hitting them with about five mils per gallon I have tried going less and I've had the same issue you are having now. Its a quick fix if u act fast

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Thank for advice man!
Ok so far my max dosage cal/mag was 0.5ml/L so Ill try as you said to increase that to 1ml/L and see whats gn happen and if no changes ill do foliar spray with epsom salt, by the way your feed your cal/mag every watering?
I got already so ill use it now, but epsom salt is on order should arrive in 2-3days

I agree I see some good looking plants with a mag def. like stated above. Epsom only would be what I would add.

ComfortCreator said:

WW is a big, big plant. For future grows 1 ww is plenty for a 2x2! Assuming they are photos

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Yes they are photos. I know they are big but had few free seeds that waned to try out but was a bit of mistake so just trying to make them as short as possible atm with me luck haha next grow will be bigger tent 2m
Got any advice for me on article?

420mlet said:

I got View attachment 4858421 already so ill use it now, but epsom salt is on order should arrive in 2-3days

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Not to bust your ballz but 2-3 days? You don’t have a hardware store or nursery or pharmacy? Non scented Epsom ASAP

420mlet said:

Yes they are photos. I know they are big but had few free seeds that waned to try out but was a bit of mistake so just trying to make them as short as possible atm with me luck haha next grow will be bigger tent 2m
Got any advice for me on article?

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Hi, im not clear on your question. If asking about the current issue I agree with the others about Mg being locked out or deficient.

420mlet said:

Thank for advice man!
Ok so far my max dosage cal/mag was 0.5ml/L so Ill try as you said to increase that to 1ml/L and see whats gn happen and if no changes ill do foliar spray with epsom salt, by the way your feed your cal/mag every watering?
I got View attachment 4858421 already so ill use it now, but epsom salt is on order should arrive in 2-3days

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I do feed every day in coco if your going off a feeding chart i would hit it with the max until you correct the problem then lower it slightly but I use it for veg and bloom but it will require less in flower

Just bought epsom salt going to use it tonight!
Thank you all for replays!!! if anyone is interested gn post pictures here how did it go!
you all amazing people took time to help me out

Are you sure about your light distance???

Bukvičák said:

Are you sure about your light distance???

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This you should figure out first of all before you gonna dick around with epsom and calmag. You likely wont solve anything with watering with these two. Foliar feed means immediate acces to calcium and magnesium without proces taking place in medium before nutrients are availible for plant. Plant does not have to wait and fight for its food. People here only parroting the net. Epsom salt is used in organics where the microbes take complete care of feeding the plant so you do not have to worry about ballance and things around that or as one part of multipart feed but it is together with calcium nitrate in correct ratio. Putting epsom salt alone into your water when you are not organics leads to even bigger imballance in your medium, antagonisms and lockouts. Ussual advice given on the net is 1tsp per Gal results in EC burning your plants, not talking about shitload of sulphur. I would be really careful with epsom. Raise your light first and watch if it stops or spreading more, if spreading than give FOLIAR with that calmag you have half dose no help than full dose. If still bad than consider half dose balanced food + calmag watering until your runoff have same EC value as your nutrient solution than next watering with seaweed extract. That is my best advice. GL!
Edit: or instead of seaweed if you have access to microbes than even better

Bukvičák said:

Are you sure about your light distance???

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yeh Im 24” from top its Mars TS-1000(150w) manufacturing recommendations I just dimmed lights to 85% got lack of space in my Gave them feed today with 1ml/L cal/mag and Ill see how it will go

A mix of peat and coco? I stick with peat based Promix HP and have very few if any problems.

Foliar spray some Epsom if anything but it doesn't look like typical low Mg to me at all. Would be showing really bad on the lower leaves if it was a magnesium deficiency as Mg is a mobile nute and would be stolen from the old leaves to feed the newer ones. Mobile nutes are NPK, Mg and Zn and can be relocated by the plant to keep top growth healthy. Everything else is immobile and must come from the roots or a foliar application.

Nutrient imbalances and bad pH, (usually too high), are the cause of almost all deficiency problems and must be attended too if a fix is to be had.

You might try watering enough with fresh nutes about half strength to get a litre or more of runoff. Helps to reset the system a bit. Should be soaking the pots really good when you water and with coco in there don't let them get really dry before watering again like I do with my all peat mix.

OldMedUser said:

A mix of peat and coco? I stick with peat based Promix HP and have very few if any problems.

Foliar spray some Epsom if anything but it doesn't look like typical low Mg to me at all. Would be showing really bad on the lower leaves if it was a magnesium deficiency as Mg is a mobile nute and would be stolen from the old leaves to feed the newer ones. Mobile nutes are NPK, Mg and Zn and can be relocated by the plant to keep top growth healthy. Everything else is immobile and must come from the roots or a foliar application.

Nutrient imbalances and bad pH, (usually too high), are the cause of almost all deficiency problems and must be attended too if a fix is to be had.

You might try watering enough with fresh nutes about half strength to get a litre or more of runoff. Helps to reset the system a bit. Should be soaking the pots really good when you water and with coco in there don't let them get really dry before watering again like I do with my all peat mix.

Click to expand...

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