THC Bomb - DWC - LED

[Nutria]

Yo
After an unlucky first try I corrected some things and so I restarted!

Strain info:

• strain: THC Bomb.
• seed bank: Bomb seeds.
• genetic: mix.
• # plants: 1.

Setup:

• growbox: cabinet 60cmx40cmx100cm (2x1,3x4ft).
• light: Mars-Hydro 300w led (5w chip) modded with aftermarket fan to lower the noise.
• medium: Expanded clay, single bucket (10l - 2,6 gal) dwc system.
• nutrients: GHE floraduo (grow+bloom+ripen).
• fans: (outtake) 1x inline fan 10cm (4") - 1x small usb fan

 

[Nutria]

Day 12
After a slow start it has begun to grow, when roots popped out and touched the water it definitely speeded up!
I tried to lower the light for a day but then I spotted some grey on a leaf' tips (img 3&5).

 

[Nutria]

PH 6.0
PPM 600
Temp 26.4C / 80F
RH 70%

 

[doctor green]

Nice mate little bit of purple there on the new growth

 

[Nutria]

Nice mate little bit of purple there on the new growth

yep there's some purple, dunno if it's the strain or anything else... I hope it's all ok lol

 

[doctor green]

I've found that it happens in cold temps and if you see it early and maintain a cool environment the plant will continue on with purple hues but I'd temps go up the purps on these let's call them not purple strain plants the purpose goes with the higher temps

 

[Nutria]

I've found that it happens in cold temps and if you see it early and maintain a cool environment the plant will continue on with purple hues but I'd temps go up the purps on these let's call them not purple strain plants the purpose goes with the higher temps

i know it's related to cold temps but I thought it could happen only during flowering stage. Btw with lights off temp goes down to 62/64f

 

[doctor green]

Yeah that could do it ive had it in veg at 63f lights Off

 

[Nutria]

today I spotted some problems on the older leaves, what's that? light burn? nutrients problem?
please give me some advices! ph, ec are the same

 

[Nutria]

Water has been changed:
0,4 gal tap water (250ppm)
1,2 gal RO water
Then added:
+12ml floraduo grow (5-0-5)
+4ml floraduo bloom (1-5-3)
+2.5ml mag
+2.5ml cal

PH 6.1
750ppm (keep in mind i used some tap water)

QUESTION TIME !!!
1. I have red some people complaining about this FloraDuo due to its lack of Cal, how much should I add? I am following instructions on the bottle but do you guys can suggest me any way to calculate how much to add?
2. I know dwc water should be between 1500 and 1800ppm, so, is mine too much low?

*next time I have to keep track of water tds before adding nutes

 

[Nutria]

I think I have spider mites, so i mixed water and alcool and sprayied the leaves..

 

[Nutria]

btw expect for this

the tiny plant is growin well

When should I top it? next internode maybe?
it is wet cause I used a spray

 

[nuggs78]

I would wait to next internde then top it should be ok to by then.

 

[Nutria]

I would wait to next internde then top it should be ok to by then.

thx for answering, I will post a better picture before topping!
Still uncertain about going for scrog or mainlining

 

[Nutria]

Still have problems... shit can't figure out how much cal and mag I should give

older leaves

young leaves

 

[Nutria]

Little update

plant has grown 6 nodes and has been topped above the 3rd, cropped a bit and now I am waiting for the 4th node on each branch to create a mainlining

Here are some problems maybe

 

[c0bblep0t]

700 ppm might be too high for a plant that size , I'd half it , quarter it even , I'm no expert tho , only on my 2nd grow

 

[Nutria]

700 ppm might be too high for a plant that size , I'd half it , quarter it even , I'm no expert tho , only on my 2nd grow

Rly dont know... Btw I will flush with ro water and see.
It could also be burning due to high rh or water spray on leaves..

 

[Nutria]

Hi guys, I am thinking about adding 2x40w cfl 2700k for the flowering stage.
What do u think?

 

[Heraldo]

Extra light during flower? Very good idea indeed. Now you got me thinking when would be the best time to add them. My guess is before the flip, once you start getting preflowers. To give her the feeling that summer started and the days are getting hotter and sunnier. I'd put them on the sides to get to those lower branches that are harder for the led to reach. But wait for a more experienced opinion before you go listening to me. Just in case