20 day old White Widow leaves ridges turning yellow?

So I've been growing 2 white widows, without much issues, first time grow, so some teething problems, recently thought I over watered them.

I moved them from a small tent with a 100w light to a bigger 3x3 tent with a 300W light dimmed to 40% they are 20 days old, I have been using bottled water at around PH7 last water I used PH down to get it to around 6.2 with a test strip.

I am going to start using boiled tap water and PH it down because I believe it may be CALMAG deficiency, although I am not certain?

Some, but not all of the leaves (mainly the top leaves?) are turning yellow at the ridges and tips, with a slight droop as well. This is happening with both the plants...

I've attached some photos so any help would be good! Haven't been watered in 3 days so seem quite dry and was thinking of running through some tap water boiled so they get some calcium and magnesium along with some Bio Bizz Grow, the soil is LIGHT MIX by Bio as well, seems like I should have got the all mix.. I guess it's a learning curve.. Anyway any help appreciated here

Cheers

Honestly they look pretty healthy to me. At this point I wouldn't worry. What grow style is you medium?

just make sure your water is between 6.2-6.8 and you should be okay. That's assuming your in soil

pegboy said:

Honestly they look pretty healthy to me. At this point I wouldn't worry. What grow style is you medium?

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Bio bizz light mix
Should have gone with the all mix!
Currently just using water at the moment
Bottled water until I can start using dechlorinated tap water .

nothing to stress about, there fine, just keep an eye on the tips, id they get any yellower, then ask again

senorthc said:

just make sure your water is between 6.2-6.8 and you should be okay. That's assuming your in soil

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So you think I should water them as normal tomorrow and maybe add some bio grow for some extra nitrogen etc with some dechlorinated tap water for calcium and magnesium and PH it to around 6.5?

go go kid said:

nothing to stress about, there fine, just keep an eye on the tips, id they get any yellower, then ask again

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Started noticing this today
It seems to be the ridges of the leaves.. hasn't gone onto the plant yet?

MisterNoice said:

So you think I should water them as normal tomorrow and maybe add some bio grow for some extra nitrogen etc with some dechlorinated tap water for calcium and magnesium and PH it to around 6.5?

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I say just water for now, the green is good, like go go kid said, if it gets worse then add the nutes or look for further help.

Your plant looks great. Feed it molasses every 3rd watering. 1 teaspoon per gallon of water, correct ph to 6.5. Molasses has Cal, Mag, Iron, K. The sugar also helps the microbe population in the soil. Microbes in soil break down the organic matter and make nutrients more accessible to the plant.

Ive been growing in soil for over a decade. In my opinion, dry amendments are easier to manage. Liquid fertilizers always cause salt build ups and throw off soil PH.

I'd say you're in the sweet spot rn, if its just that tiny, tiny bit on the outer edges, I'd say don't worry too much, they look healthy!
regards, herby.

MisterNoice said:

Bio bizz light mix
Should have gone with the all mix!
Currently just using water at the moment
Bottled water until I can start using dechlorinated tap water .

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Lightmix is what you want for autos. Allows them to root faster in their limited veg time. All mix is too strong and will potentially stunt them before they flower!

Don’t boil your water. If you can drink it so can your plants. Boiling water reduces the oxygen present in the water.

I’ve done dechlorinated water and ended up not bothering. It’s an unnecessary step.

Are you feeding them yet?

With lightmix you don’t want the soil to become depleted before you start adding nutrients. Light mix is good for a week or so then add a small amount of nutrients and work up

Nutty sKunK said:

Lightmix is what you want for autos. Allows them to root faster in their limited veg time. All mix is too strong and will potentially stunt them before they flower!

Don’t boil your water. If you can drink it so can your plants. Boiling water reduces the oxygen present in the water.

I’ve done dechlorinated water and ended up not bothering. It’s an unnecessary step.

Are you feeding them yet?

With lightmix you don’t want the soil to become depleted before you start adding nutrients. Light mix is good for a week or so then add a small amount of nutrients and work up

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They've been starved of watering for 2 and a half days now.. think I should feed them with tap water and some bio grow mate? PH at 6.5?

MisterNoice said:

They've been starved of watering for 2 and a half days now.. think I should feed them with tap water and some bio grow mate? PH at 6.5?

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I water mine from seedlings every 3 days. All that changes is the amount given.

So for a 12l pot start with 250ml in a ring a few inches from the base of the plant and slowly build until around 1.5-2L. Soon I find my plants need it every 2 days then that’s them until the finish line.

How many ml per L is the bio grow suppose to be? If it’s 4ml start with 1ml. Although now that plant is quite established I’d be tempted to give it 2ml but I’ve never used biobizz grow before