Nutrient burn or deficiency?

[Perramas]

Problem: a few leaves are yellowing and turning brown starting at the tips

Medium/grow method: Soil

Feed: and supplements used: Greenleaf Nutrients MEGA CROP

water source:Tap water

Strain/age:Bag seed 30 days from first set of leaves maybe 40 days from seed

light used:Autocob

Climateay Temps 80-85F 50% RH Night 80 50% RH

Additional info:I think it started a couple weeks ago. It was minor at first and I did not pay attention.

 

[namvet25]

Some older lower leaves will somtimes yellow and die off and this is normal unless it starts moving up the plant.Are you ph'ng your water and using any cal/mag?

 

[MedCzech]

Also, are you leaving the water out for 24 hours to let the chlorine evaporate?

 

[Perramas]

I have not done any PH testing I do not have any equipment to do the testing. No Cal/Mag and no I have not let the water sit for 24 hours. There is some more yellowing a spotting on the lower leaves. The top leaves are looking fine.

 

[namvet25]

You should always ph your intake water and if you have city water you should let it stand for at least a day or more.Your plant looks ok so i wouldn't worry unless it gets worse.

 

[Perramas]

Yesterday evening I went out and got a rain barrel. I will start using that once it fills up.

 

[MedCzech]

If you want to grow herb, you need a ph meter. Not too pricey either. Then just ph water after it has been sitting for at least 24 hours. Easy man, no worries. The reward is worth it

 

[Perramas]

What brand makes good PH meters?

 

[Simplicio]

What brand makes good PH meters?

The name brands like BlueLab will cost a lot, but pH probes are notoriously short lived.
I'd suggest buying two cheap ones instead of an expensive one.
$12-$17 apiece should suffice.
Avoid the ones that read to the nearest 0.01 pH, because the second decimal place is insignificant, and makes the meter harder to read.

 

[MedCzech]

Essentials brand is very good and not too pricey.