Brown dots on fans?

[Millo]

Hello all. Noticed those brown dots on the fan leaves of my clone. The mother and the clone get the same water and nutes, but the mother doesn't have this problem, so I'm confused.

Medium is soil ( BioBizz LightMix ).
I water once a week when pots get light.
10% runoff
0.4ml/L of Biobizz:
Grow, Bloom, TopMax, Alg-A-Mic
1 tsp/L of magnesium sulphate
0.8ml/L CalMag
pH 6.5

HLG 100 V2 ( 100w ) @ 18in.

Strain is Kannabia La Reina De Africa ( aka Kaboom ), 5 weeks in flower.

I checked for bugs, haven't found any. Maybe something to do with Cal?

Don't hesitate to ask me for more photos/infos.
Thanks!

 

[myke]

Judging by the burnt tips,too much of something is causing it.What exactly Im not sure.

 

[Millo]

Judging by the burnt tips,too much of something is causing it.What exactly Im not sure.

You're right, there's definitely some nute burn. Was thinking of watering with plain pH'ed water next time.

 

[myke]

1 tea spoon epsom per litre?Is that right? Thats way too much.I think per gallon is still a lot isnt it?

 

[HydoDan]

Do you feed every time you water?

 

[Millo]

Do you feed every time you water?

Yes I do, I follow BioBizz's chart

 

[HydoDan]

Those chart are made to sell nutes.. A good rule of thumb is water, water, feed..
Here ya go: https://smartgardenguide.com/signs-of-overfeeding-plants/

 

[Millo]

1 tea spoon epsom per litre?Is that right? Thats way too much.I think per gallon is still a lot isnt it?

1 teaspoon per liter should be the right amount, or so I've read around here. 1 tablespoon per liter would be too much. I saw someone confusing those two
In any case, giving epsom salts with every watering could also have damaged the plants. I'll start giving plain water in between like @HydoDan suggested to also treat the nute burn.

@HydroKid239 @insomnia65 @twentyeight.threefive @bk78 could you guys point to what I'm doing wrong? Thanks a lot

 

[osowhom]

for sure 1 teaspoon per litre of epsom every watering is way to much

 

[GrowingAbroad]

I use the same nutes as you do, biobizz grow/bloom and i've had some problems in my first run with it as well. I only feed once every 2 to 3 feedings and it' goes a lot better then before. Don't forget that biobizz is organic and it take time to release and by feeding it every time you water it's easy to over feed. Are you checking you're runoff water as well for PH? And what Ec are you on now when feeding?

Also a picture of the whole plant/plants would be nice in order to get the full picture.

 

[insomnia65]

1 teaspoon per liter should be the right amount, or so I've read around here. 1 tablespoon per liter would be too much. I saw someone confusing those two
In any case, giving epsom salts with every watering could also have damaged the plants. I'll start giving plain water in between like @HydoDan suggested to also treat the nute burn.

@HydroKid239 @insomnia65 @twentyeight.threefive @bk78 could you guys point to what I'm doing wrong? Thanks a lot

Hope your okay mate, I was advised to use a 1/4 teaspoon if Epsom salts to a litre of water but I would hold out for information from experienced peeps like @myke and @bk78 @twentyeight.threefive

I've read loads of links with different measurements so I know what your going through hope you get it sorted soon.

As always with the ladies less is more kiss and wait, I know it's a pain but you really have to wait for the plant to show you it's reaction to what you give it. Good luck.

Epsom Salts: a natural hack to grow healthy cannabis plants - RQS Blog

Epsom salts get their name from the spring water of Epsom, England. But what exactly do they do for cannabis plants?

www.royalqueenseeds.com

 

[Millo]

I use the same nutes as you do, biobizz grow/bloom and i've had some problems in my first run with it as well. I only feed once every 2 to 3 feedings and it' goes a lot better then before. Don't forget that biobizz is organic and it take time to release and by feeding it every time you water it's easy to over feed. Are you checking you're runoff water as well for PH? And what Ec are you on now when feeding?

Also a picture of the whole plant/plants would be nice in order to get the full picture.

Thanks for the tip. I will definitely reduce the feeding schedule.
I don't check runoff pH, only adjust pH before watering. I also don't measure ec/ppm. I though it was something for hydro/coco only. Or at least that's what I've read.

I'll link you my diary so you can see all the pics without me spamming them here lol

Kannabia Kaboom microgrow

WEEK 16 Haven't updated in a long time. They got transferred in my 2x2 tent. Light is HLG 100V2 3000K. Meanwhile I have taken a clone off her about 1 month ago and let it grow straight in a glass of water. When roots formed, she got transplanted in a small pot. Then she got rootbound so I...

rollitup.org

Hope your okay mate, I was advised to use a 1/4 teaspoon if Epsom salts to a litre of water but I would hold out for information from experienced peeps like @myke and @bk78 @twentyeight.threefive

I've read loads of links with different measurements so I know what your going through hope you get it sorted soon.

As always with the ladies less is more kiss and wait, I know it's a pain but you really have to wait for the plant to show you it's reaction to what you give it. Good luck.

Epsom Salts: a natural hack to grow healthy cannabis plants - RQS Blog

Epsom salts get their name from the spring water of Epsom, England. But what exactly do they do for cannabis plants?

www.royalqueenseeds.com

Hey brother, glad you know what I mean lol. I will reduce them, I'm sure you're right.
I tried to KISS but as you and the above mate mentioned, it's slow releasing nutes so who knows when all this started... I'll have to hope it gets better with time!

 

[insomnia65]

Thanks for the tip. I will definitely reduce the feeding schedule.
I don't check runoff pH, only adjust pH before watering. I also don't measure ec/ppm. I though it was something for hydro/coco only. Or at least that's what I've read.

I'll link you my diary so you can see all the pics without me spamming them here lol

Kannabia Kaboom microgrow

WEEK 16 Haven't updated in a long time. They got transferred in my 2x2 tent. Light is HLG 100V2 3000K. Meanwhile I have taken a clone off her about 1 month ago and let it grow straight in a glass of water. When roots formed, she got transplanted in a small pot. Then she got rootbound so I...

rollitup.org

Hey brother, glad you know what I mean lol. I will reduce them, I'm sure you're right.
I tried to KISS but as you and the above mate mentioned, it's slow releasing nutes so who knows when all this started... I'll have to hope it gets better with time!

I would really wait to hear from the other guys you mentioned before doing anything whatsoever mate,they know their stuff.

 

[bam0813]

Looks like the N tox and overfeeding might be locking out on you . Epsom salt is magnesium not calcium. Brown dots all over your leaves may be a cal def

 

[twentyeight.threefive]

Thanks for the tip. I will definitely reduce the feeding schedule.
I don't check runoff pH, only adjust pH before watering. I also don't measure ec/ppm. I though it was something for hydro/coco only. Or at least that's what I've read.

I'd check EC/ppm of your feed. The burnt tips indicate an overfeed. I don't know soil but what someone else said about alternating feeds with water is what I thought was done, idk.

Edit: If the EC/ppm of your feed is too strong, you can keep the proper ratio of your mix but dilute with water to lower the strength.

Why Epsom Salts and CalMag? Excess magnesium from both sources could lock out calcium causing your brown spots.

 

[Millo]

I'd check EC/ppm of your feed. The burnt tips indicate an overfeed. I don't know soil but what someone else said about alternating feeds with water is what I thought was done, idk.

Edit: If the EC/ppm of your feed is too strong, you can keep the proper ratio of your mix but dilute with water to lower the strength.

Why Epsom Salts and CalMag? Excess magnesium from both sources could lock out calcium causing your brown spots.

So I'll just have to buy an ec meter. Allrighty then. Thanks for the dilute tip.
I was giving both epsom and calmag for prevention. Had problems with Mg def in the past, when I was giving CalMag only so I bought epsom in the meanwhile as to balance it out. Now it looks like I have Mg excess hence the lockout...what the hell lol I have a really hard time balancing cal & mg

Looks like the N tox and overfeeding might be locking out on you . Epsom salt is magnesium not calcium. Brown dots all over your leaves may be a cal def

If it's cal def should I give it less epsom or give it more calmag or both? Sorry I'm just confused lol

 

[twentyeight.threefive]

So I'll just have to buy an ec meter. Allrighty then. Thanks for the dilute tip.
I was giving both epsom and calmag for prevention. Had problems with Mg def in the past, when I was giving CalMag only so I bought epsom in the meanwhile as to balance it out. Now it looks like I have Mg excess hence the lockout...what the hell lol I have a really hard time balancing cal & mg


If it's cal def should I give it less epsom or give it more calmag or both? Sorry I'm just confused lol

Normally calcium deficiencies don't occur with tap water if that's what you are using. My tap water is RO quality at 35ppm and I don't use CalMag. I don't know your nutrient line or what it contains but quality nutrients should have trace minerals in sufficient quantity.

It's better to add stuff after you notice a deficiency than to pre-emptively add supplements. Now you have no idea whether the plant truly needs more or if it's just a lockout from adding extra to begin with. Less is more.

1 tsp/L of Epsom Salts sounds like a lot. I use 1g/gallon in my nutrient mix. I don't think a gram is even close to a tsp.

Edit: also just checked your nutrient line feeding schedule. At that stage of flower looks like you should be feeding at a ratio of like 4:1 of bloom:grow. Why are you feeding it the same amounts of each?

 

[bk78]

Sorry man I can’t help out as I’m not a soil grower

as for Epson salt I use 1 gram per gallon from clone to harvest in my reservoirs

 

[Millo]

Normally calcium deficiencies don't occur with tap water if that's what you are using. My tap water is RO quality at 35ppm and I don't use CalMag. I don't know your nutrient line or what it contains but quality nutrients should have trace minerals in sufficient quantity.

It's better to add stuff after you notice a deficiency than to pre-emptively add supplements. Now you have no idea whether the plant truly needs more or if it's just a lockout from adding extra to begin with. Less is more.

1 tsp/L of Epsom Salts sounds like a lot. I use 1g/gallon in my nutrient mix. I don't think a gram is even close to a tsp.

Edit: also just checked your nutrient line feeding schedule. At that stage of flower looks like you should be feeding at a ratio of like 4:1 of bloom:grow. Why are you feeding it the same amounts of each?

I don't know what's in my tap water but it should have all the essential minerals, I live in a clean mountain area.

Anyways if you wish I could look up online if I can find some analysis. In the meanwhile this is what my CalMag contains:



I agree on the less is more, a lesson for the future.

I will give 1tsp/gal next time and see how it goes form there. One question tho... If my calmag is not garbage, it should be enough by itself right? Or is it always advisable to add a lil bit of epsom in flower?

There are 2 charts to look at. The one you saw is for AllMix soil, which is way hotter, hence the low dosage.

LightMix soil follows another chart, alongside coco:

 

[Millo]

Sorry man I can’t help out as I’m not a soil grower

as for Epson salt I use 1 gram per gallon from clone to harvest in my reservoirs

Hey bk, thank you very much for the confimation, much appreciated. 1g/gal it is!