Seedlings looking sad :( HELP NEEDED

You got a ppm meter mate?depending on your water you might not need the calmag.
Ph5.7 for now but first if you could run some of your usual solution through it and collect the first bit of run off.
check the ph and ppm of that and let us know what it is. Will show if your ph is off in the pot.
also what lights you got and how far from the top of the plant. Mmm... yeah that’ll do for now.
nothing to worry about anyway man, be an easy fix once we figure it out

 

Oh and do you always get a decent run off when you feed? Ensuring there are no dry spots in the coco?

 

I reckon it’s just the ph is too high but answer the rest of that lot so I can rule out anything else. Could be a few things so..

 

You don’t need one mate, quarter strength should be 400-500ppm. That’s about all they need anyway. It’s just handy to have.
It is the ph though. 6.5 is way to high.
Go in at ph5.7 and it’ll go away after a few days. It is mag def that’s appearing but it’s the high ph that’s causing it, Not a lack of calmag.
don’t flush or anything like that, just adjust the ph and it’ll sort itself out soon enough

 

Keep to quarter strength untill the bottoms start going yellow then upto half strength.
your current dose should be enough for the next month or so though.

 

It looks like a deficiency. Most over loading starts at the tips anf works back. Like archer said ya ph is to high which will be locking out nutes.

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Wee colour coder for you.

bottoms go yellow it’s N def. means they need more base nutes.

mid growth loses colour and goes blotchy like that or rust spots appear then they need more calmag.

tops go yellow they need iron. Usually found in bottles of micro and calmag+.

If you feed light and wait for the deficits to appear before upping things then you eliminate the possibility of over feeding which can cause toxicities to look like deficits and vice versa.
Hungry plants sort themselves out once you feed them but overfed plants can be pretty heavily damaged by the time it’s visible.

and obviously all of the above only counts if your ph is correct.
5.7 for veg
6 during the stretch
6.3-6.5 for bloom.

The reason being that if your feeding correctly then the ph in the pot will rise during veg and drop during bloom. So doing it like that keeps it in range at all times

but yes, keep nutes the same and just adjust to ph5.7.

 

I don't see anything wrong.

 

It is pretty fool proof in coco I believe you just were misinformed about correct ph levels in coco. Your coco should be between 5.5 and 6.3 roughly once and a while outside either way is not a big deal you just adjust your next feed to correct. You will be rolling good soon now that you are shooting for the correct ph levels.

 

Btw I can already see improvment from the first set of pics.

 

Whatever you’re doing now has sorted it so just keep doing what you’re doing mate. back on track so just chill and let em do their thing