Yellow tips on seedling

[longtimelover]

Hi all, need some more help.

Seedling has developed yellow tips overnight.

https://photos.app.goo.gl/u5kxZ6XE4eHbRvND9

Based on my previous post, my last watering was via a small syringe. Around 15ml in 500ml pot for a seedling that is 3 days old.

Growing in coco/perlite
Using water and nutirients

What should I do?
Less watering? Skip nutrients for a bit?

I keep reading measure the run off for pH and Ec, but I'm not using enough water at this stage for runoff

Additionally humidit was 70-85 last night, could it be this?

Thanks in advance

Maz

[Bulls]

What nutrients have you used @longtimelover and at what ratio ml to 1L of soltuion ? What was the pH of the solution?

[Bulls]

Really depends what he means by Nutrients. He might have used some kind of root stimulator or canna start..which is good for seedling at that stage..but if he used 3 ml per L Canna A&B we have the answer of the problem :) More info and we will come to the answer

[longtimelover]

thanks all,

I am using canna A&B, started with 0.9ml of both in 500ml but then had to add 500ml of distilled water to achieve EC
pH was 6

I did have some water droplets on the lead - so that could be it as well

will switch to distilled water for the next few days and see what happens,

[Bulls]

What is your tap water EC mate, what's the reason to be using destiled water? I wouldn't use destiled water as it means literally zero feed..whilst tap water still got something in it. 0.9 in 500 ml is nearly 2ml per L so that's asking for trouble itself. I'd just use tap water with pH 5.8-6.0 Until first set of true leaves appear and then start adding A&B gently to increase the EC by 0.2 on top of your base.

[longtimelover]

the readings seem to vary daily for tap water - is this normal?

just tested now and EC 0316 (0.3) and PH 7.17

both have been much higher in previous tests, really strange

[Bulls]

Seems that you have soft water..which is good. I'd get water sitting for 24 hrs prior mixing with nutrients or feeding the plants. No need for destiled water :) Tap water ec does vary sometimes.depending how much chemicals the put in it to "clean it"

[longtimelover]

Seems that you have soft water..which is good. I'd get water sitting for 24 hrs prior mixing with nutrients or feeding the plants. No need for destiled water :) Tap water ec does vary sometimes.depending how much chemicals the put in it to "clean it"

Water sitting? do you mean pour some into a container and use that , rather than fresh from the tap?

ahh the EC thing makes sense.

thanks

[Bulls]

Well yes. Let the water rest for 24 hrs in a bottle or bucker or whatever you use to store it :) For now you only need small amounts every other day or two but when plant grows and needs daily feeding you can mix your feed for few days in advance.