are they overwatered? pls help identify

[nory222]

Hope you are all well

This is my 4th Growth.
These 2 strains are watermelon zkittles and pinneaple express, both autoflowers

1. Germinating in paper towel then moved to soil coco mix in 20 oz solo cup
2. March 5th, First sprout
3. March 6th, watered 60 ml of ph-ed water 5.8
4. March 12th Watered 90 ml of ph-ed water 5.8
5. March 18th Watered 60ml of ph-ed water 5.8 (stop when ran off).

the grow tent temp is 26 Celcius
LED distance around 60cm
humidity around 60

Now, the leaves are browning as picture attached.

Are they over watered? or possibly something else?
please help

 

[Bill.de.Cat]

Hope you are all well

This is my 4th Growth.
These 2 strains are watermelon zkittles and pinneaple express, both autoflowers

1. Germinating in paper towel then moved to soil coco mix in 20 oz solo cup
2. March 5th, First sprout
3. March 6th, watered 60 ml of ph-ed water 5.8
4. March 12th Watered 90 ml of ph-ed water 5.8
5. March 18th Watered 60ml of ph-ed water 5.8 (stop when ran off).

the grow tent temp is 26 Celcius
LED distance around 60cm
humidity around 60

Now, the leaves are browning as picture attached.

Are they over watered? or possibly something else?
please help

Wow....could be nute burn or bad deffieciency or light burn....what do you mean by a soil/coco mix, are any nutrients being added and how strong is the LED light....

 

[darknight_420]

If you're mixing soil and coco then you'll struggle to get the correct PH balance and once those deficiencies hit your leaves they'll mirror many other with similar symptoms

Coco is 5 8ph and soil is around the 7.0ph and if you under PH in soil you've issues and if you over PH in coco you're getting similar signs to what you have.

IMO, You're going to need to give something more than water as the leaves are showing signs of underfeeding and not underwatering.

Maybe adding some seaweed extract in your water will help get the roots developed

I would let that dry up and then repot in a single mix of either coco or soil and use the correct nutrients and the right PH levels

Oh and I do like how you turned your solo cup into an aircup

 

[Cannaficionado]

Not a lot of people mix soil and coco because it has more negatives than positives. Soil is usually peat based and its usually ammemded with organic and inorganic fertilizer, where coco is usually treated but doesnt really have food readily available, this is because coco is more of a hydroponic based medium and doesn't hold on to food like peat. Peat will actually retain a lot of plant food, meaning you really dont need to feed it all the time like you do with coco. I run fox farm and its a peat based soil, I only feed once every 3rd or 4th watering. Also the normal ph values are usually different as well. Soil does well when inputs are around 6.0 to 6.5 where coco performs better slightly more acidic than that. I would also worry depending on the ratio when you do feed a lot of it could wash right out during normal waterings leaving your plant with less food than you think its getting.