Pistils turning orange/brown

Please help me to sort it out this mystery.
Growing Zowahh strain under full spectrum LED'S. RH 55-60 Temp 25-30 c° (I was advised to keep temperature higher while growing under LED'S)
3weeks and half in flower and pistils turning orange/brown. this is happening for the second time in a row. Previously I was growing Amnesia and I've had the same issues. No hermaphrodite was detected.
Any idea please cos it drives me mad....

What's the issue? Pics of your last harvested plant?

Nope_49595933949 said:

What's the issue? Pics of your last harvested plant?

Click to expand...

Pistils turning orange, that's the new pics

Green Rascal said:

Pistils turning orange, that's the new pics

Click to expand...

Yea, let's see pics of your last plant at harvest.

Nope_49595933949 said:

Yea, let's see pics of your last plant at harvest.

Click to expand...

Don't have any

Give us the full pic of your setup -

Lights / distance
medium
nutes
water / ph
temp / rh

pics of canopy / number of plants

Is this happening on tops only or all ?
More info the better.

Budzbuddha said:

Give us the full pic of your setup -

Lights / distance
medium
nutes
water / ph
temp / rh

pics of canopy / number of plants

Is this happening on tops only or all ?
More info the better.

Click to expand...

Its happening only in the middle of plants.
LED'S full spectrum on 600w at the moment, distance 3ft coco medium, temperature 25-30 c° RH 55-65 pH 6.0
Pictures attached

Budzbuddha said:

Give us the full pic of your setup -

Lights / distance
medium
nutes
water / ph
temp / rh

pics of canopy / number of plants

Is this happening on tops only or all ?
More info the better.

Click to expand...

Plants under HPS lights looking absolutely fine, no browning pistils whatsoever...
And it happening second time in a row