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Nute burn / Yellow leaf / nute definency?low pH? flushing?


New Member
Hey, here is some info for a proper analysis. The yellowing of the leaves started prior to me adding the nutes, but have gotten "worse" and spread to the rest of the plants.

Stage : Day 30 (from seed)
Light Schedule : 18 / 6
Transplanted into 3.75 L pots. (2 weeks ago Day 15)

Temp :

22 - 25 celsius
humidity : 30 - 50 %

Lights :

1x 90 W UFO LED (80 red 10 Blue)
2x 18 W LE 1350 lumen (827 color)
2x 15 W LE lights

Ventilation (PC fans):

2x exhaust fans 120 mm
2x intake fans 120 mm
2x intake fans 90 mm

Seeds :

2x indica / vanilla kush (afghan x Kashmir) feminized
2x Indica / Cheese - (skunk x hindu kush) feminized

Soil and pot :

3.75 litre pots (15x15x20 cm) (for vegg/flowering)

Soil mix :

55 % (regular soil, low on fertilizers and nutrients)
30 % Perlite
15 % Vermeculite
NPK (soil) : 14-7-15
PH : 6.0 - 7.0

Size of Grow room :

Width : 70 cm
Height : 90 cm
Depth : 35 cm
Your medium:

nutrients and water:
Water : Tap, PH 6.5
Checked water with drops and color map.

Nutrients :

BIO BIzz / Bio Grow / Bloom
Grow : ½ ml / liter (started adding week 4 from seed)
Havent started with the Bloom yet. but I am going to start adding ½ ml/l
week 6 and upping the dose to 1 ml / L when I start flowering in a few weeks.

So this is the first week im running nutes into the water, I added ½ ml / L water of bio grow, according to the nutrient table biobizz has, it said to add 1 ml / L im using half the dose.

The yellowing of the leaves and nute burns had occured prior to me adding nutes, but seems like it has started to spread, a few leaves have died off as well.

What could the problem be? Should I stop with the nutes? could it be something else? should I flush? and start over with the nutes? Could the pots be too small?

Here are the pics :


and here is a link to my grow journal if that might help...

420 Magazine ®

thank you for the help! ;)


New Member
Thank you for all the replies :)

New2Growin91 - Yeah I did flush them, haven't added any nutes yet since I thought that the cause of the leaves turning yellow/brown was due to a nute burn.

Maer : yeah ... I'm LST them ... They are in week 5 now from seed and I don't have a lot of space for them, the LST seems to be working quite well.

I'll be adding a little bit of nutes next week just to see if there might be a deficiency ... I'll keep posting new photos in my journal here


New Member
oh ... the strings are the same type of fabric as shoe strings, they are elastic ...
the smaller oval shaped strings or wires are regular rubber wire cut from a AC power supply, if that makes any sense ...
I don't think that the strings are causing these problems, but then again ... they might ..
I'll flush the plants again in a few days and add ½ ml / L bio bizz grow and ½/L bloom to see if I'll see any changes ..
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