Rust spots on leafs due to LED board?

[MrNice]

hi as said a foliar of epsom salts or cal/mag will stop it getting worse but the marks will remain,foliar is taken in quickly and best applied in as fine a mist spray as you can both on and under the leaves soon picks them up,good luck

Mr duke folier feed once a week cal/mag only through veg stage ?

hi if i use foliar i go high ec sometimes up to 3ec but safer is around your normal feed dose and i use a fine mist and if needed 2 days later do it again,in veg or very early flower is best,i use to revive my starved and neglected clones at the high ec,only killed a couple like that! epsoms dissolved in warm water 1tsp per 5 ltrs works good,peace

Duke epsoms salts is pure magnesium tho no calcium in it i think

[Captain Beefheart]

thats not a cal defficency i`d be looking for mites / it might be just a teenage acne problem,either way ewe dont need cal / mag if the dope is getting a stable diet,i never used cal mag in my career tbh a few spots i call teething problems

[Wayne36]

I had rust spots on my plant indoors where as not just the spots but like a powder that would rub off. I was ph at 5.8 5.9 ish but spoke with mention]Keeno[/mention] and I know there could be a few reasons why thus happens but I upped my ph to 6.2 and it seems it has stopped or slowed right down as the ph need to be higher to get the calcium or salt upped

[MrNice]

Some info here from RQS

How To Prevent And Fix Every Cannabis Nutrient Deficiency

https://www.royalqueenseeds.com/blog-ca ... -table-n88

[duke]

Mr duke folier feed once a week cal/mag only through veg stage ?

hi if i use foliar i go high ec sometimes up to 3ec but safer is around your normal feed dose and i use a fine mist and if needed 2 days later do it again,in veg or very early flower is best,i use to revive my starved and neglected clones at the high ec,only killed a couple like that! epsoms dissolved in warm water 1tsp per 5 ltrs works good,peace

Duke epsoms salts is pure magnesium tho no calcium in it i think

hi yes epsoms for mag defs,i rarely buy cal mag but have a big tub of epsoms and it lasts years

[Marcus]

Hi @Benjic93

What are you feeding them? How much? What substrate are they in?

I found in the past when I started getting rust spots, I just upped the feed.

I was told by lots of people that I needed calmag when I started using leds... I never needed a drop of the stuff, the bottle is still unopened.

[Benjic93]

Hi @Benjic93

What are you feeding them? How much? What substrate are they in?

I found in the past when I started getting rust spots, I just upped the feed.

I was told by lots of people that I needed calmag when I started using leds... I never needed a drop of the stuff, the bottle is still unopened.

Hey @Marcus

Cheers for that,

There in plant magic supreme soil
2ml old timers grow
0.5ml Bio sillicon
2ml root stimulator
(Per ltr) they get a 2ltr feed in there 12lt pots.

I did foliar feed them with the plant magic magnecal but it has seemed to kind of stained the leafs so probably won't be doing that again.

I'll up there feed on there next one then

[Marcus]

Hi @Benjic93

What are you feeding them? How much? What substrate are they in?

I found in the past when I started getting rust spots, I just upped the feed.

I was told by lots of people that I needed calmag when I started using leds... I never needed a drop of the stuff, the bottle is still unopened.

Hey @Marcus

Cheers for that,

There in plant magic supreme soil
2ml old timers grow
0.5ml Bio sillicon
2ml root stimulator
(Per ltr) they get a 2ltr feed in there 12lt pots.

I did foliar feed them with the plant magic magnecal but it has seemed to kind of stained the leafs so probably won't be doing that again.

I'll up there feed on there next one then

I'd probably double check my ph pen is calibrated too.

But that seems like plenty of grub for them.

Just keep an eye on it. If it gets worse, then personally I'd drop the root stim and silicon and just feed the grow at 2.5ml/L ph'd to 6.5(ish) upping that to 3 or 4ml/L week before you flip them.

You'll get them dialled in soon enough. One or two farty bits on leaves ain't a problem in my tent, I just don't wear my glasses when I go to feed them and the issue is solved.

Good luck man!

[Benjic93]

Hi @Benjic93

What are you feeding them? How much? What substrate are they in?

I found in the past when I started getting rust spots, I just upped the feed.

I was told by lots of people that I needed calmag when I started using leds... I never needed a drop of the stuff, the bottle is still unopened.

Hey @Marcus

Cheers for that,

There in plant magic supreme soil
2ml old timers grow
0.5ml Bio sillicon
2ml root stimulator
(Per ltr) they get a 2ltr feed in there 12lt pots.

I did foliar feed them with the plant magic magnecal but it has seemed to kind of stained the leafs so probably won't be doing that again.

I'll up there feed on there next one then

I'd probably double check my ph pen is calibrated too.

But that seems like plenty of grub for them.

Just keep an eye on it. If it gets worse, then personally I'd drop the root stim and silicon and just feed the grow at 2.5ml/L ph'd to 6.5(ish) upping that to 3 or 4ml/L week before you flip them.

You'll get them dialled in soon enough. One or two farty bits on leaves ain't a problem in my tent, I just don't wear my glasses when I go to feed them and the issue is solved.

Good luck man!

Agh to be honest mate I don't even PH. I didn't in my last grow and it worked out fine without issue. Just didn't know if it was the light causing it perhaps and I needed to give them something.

I'll see what happens and keep a eye on them. Doesn't seem to be progressing anyway.

Thankyou mate

[IMO]

I think the leds push the plants along at a rate in some ways they may not be able to keep up with in soil, they can probably better keep up with them in hydro/coco, just a guess, but I get these rust spots, next grow I’m adding some Dolomite lime to the soil for magncal, hopefully that will keep them ticking along