My auto is growing soo slow

Hello im growin green gelato automatic in dwc system with 120w led. Its 73 days now.. it started flower at week 8 now its over 10weeks old. Plant is like 40cmx40cm and 35cm high.
Roots have been aleays look like brown since beging(see in picture) water temp is 21-24c ph 5.5-6.5 19h light 5h dark..
And sone lower pistils are getting brown already..
Does it look normal to you ?
Thanks

I have an auto that is slow also. It is Caramelicious auto from m-s.nl. she took 45 days to start flowering. I was running her at 20&4. At day 40 I switched to 18&6 that's when I noticed she was in transition to flower. She has gotten huge for an auto that was Feb 25th

Also, what nutes are you using? Your root mass and leaves are pretty dark.

Nutes and you need more light

hermeson2 said:

Hello im growin green gelato automatic in dwc system with 120w led. Its 73 days now.. it started flower at week 8 now its over 10weeks old. Plant is like 40cmx40cm and 35cm high.
Roots have been aleays look like brown since beging(see in picture) water temp is 21-24c ph 5.5-6.5 19h light 5h dark..
And sone lower pistils are getting brown already..
Does it look normal to you ?
Thanks

Click to expand...

Way too many pics that take ages to load man. Not all of us are on Starlink yet tho I've paid my deposit.

You got some root rot going on it looks to me. I'd be getting some food grade peroxide and dosing them ASAP to save the plants. I did my first DWC grows 20 years ago so have had some experience in this. Did around 50 tubs worth and dealt with root rot only a couple times and saved both with 35% peroxide. 4ml/L daily for a few days then lower the dosage and skip some days until nice white roots are predominant. 0.5ml/L twice a week prevented rot in most cases. Building a DIY chiller from an old water cooler let me keep temps around 17C so didn't need peroxide after that.

Good luck.

hermeson2 said:

Hello im growin green gelato automatic in dwc system with 120w led. Its 73 days now.. it started flower at week 8 now its over 10weeks old. Plant is like 40cmx40cm and 35cm high.
Roots have been aleays look like brown since beging(see in picture) water temp is 21-24c ph 5.5-6.5 19h light 5h dark..
And sone lower pistils are getting brown already..
Does it look normal to you ?
ThanksView attachment 4846317View attachment 4846318View attachment 4846319View attachment 4846320View attachment 4846321View attachment 4846323View attachment 4846324View attachment 4846325View attachment 4846326View attachment 4846327

Click to expand...

Very airy

The roots look pretty dark. How are you oxygenating them and what do they taste like? Would they go well in a salad, crisp with flavor or are they mushy and have a funky aftertaste?