Check the winners The Grow Awards 2026 🏆
Start My Diary
Start My Diary
Log In
Start My Diary
Home
Diaries
Strains
Shorts
Questions
Contests
Growers
Seeds
Breeders
Nutrients
Equipment
Blog
English
Log In
Sign Up
Following
Follow
Brands
&
Growers
to get updates
Back to Grow Questions
Adding in an LED board for the last 2-3 weeks of flowering?
Dudders
started grow question 5y ago
Currently running a 400w HPS lamp. Would there be any significant benefit in adding in a 100w LED board on purple or blurple?
Solved
Setup. Lighting
likes
Organoman
answered grow question 5y ago
No. Just a waste of electricity. Your 400 watt HPS will be far superior and also be completely adequate.
3 likes
Complain
Selected By The Grower
Similar Grow Questions
Solved
Jorath
Wondering if doing another defoliatation would direct more focus to the main sites? Also I have three other plants that are about 2.5 weeks younger, so I have to keep an 18/6 light schedule. Would I have to switch the flowering plant to 12/12 even though it's an auto?
Week 7
Setup. Lighting
6y ago
1
4
Solved
420Highlifecouple
What is the plant to light distance with a MARS TSW2000?
Setup. Lighting
5y ago
3
4
Solved
Taito
Cultivo con SF1000 LED Grow Light Full Spectrum
Cúantas plantas puedo cultivar de forma óptima con SF1000 LED Grow Light Full Spectrum en macetas de 3 Litros? Y en macetas de 20 litros? Muchas gracias por las respuestas.
Setup. Lighting
6y ago
2
2
Solved
Kikiwindsurf
Luz complementaria ? // Extra lighting ?
Debería complementar la luz solar con un CFL 250 watts de Luz blanca ? Tienen 8 horas de luz solar directa ! Should I complement my cannapy with a CFL 250 watts White light ? They are 8 hours Direct sunlight !
Week 1
Setup. Lighting
6y ago
1
2
Solved
Chilltkroete
Started the plants off with 60 watts. Increased to 100 watts today with a 20/5 schedule. Could I increase to the full 150 watts already or should I give them a few days with 100? Thanks in advance for any advice. It’s my first indoor grow with this setup and I’m still learning :)
Week 1
Setup. Lighting
2y ago
1
Solved
AllHomeGrow
LED LIGHTS 440 nn 660nm
Hi Growers, LED light spectrum 440 nm and 660 nm, AutoFlower strain? Tell me your Experience plz! SPECS: Supply Voltage: 85-265VAC Wattage: 22W Wave Length: 450nm 660nm Dimmable: No Lumens: 990lm Power Factor: 0.95 Estimated Life Span: 35000h
Setup. Lighting
5y ago
1
1
Solved
Noahbear
LED light recommendation
I am going to need a new LED light to hang from the ceiling. I am looking for a light that has the red/blue spectrum. A dimmer switch would be awesome- the ones I read about that include-seedling, veg and flowering settings sound amazing. Any recommendations out there? Thanks in
Setup. Lighting
4y ago
7
4
Solved
The_garden_of_Vixen
Lamp distance
Hello. I have a question about my lamp distance. I’ve changed the lamp to MARS HYDRO 2023 TS600 LED a week ago and a distance to the plant was 18 inches. During this week a plant grew and the distance became 12 inches. I lifted the lamp to 13 inches. What distance I have to keep?
Week 6
Setup. Lighting
3y ago
3
2
Solved
Purple2by4
Switching from led to hps for flower?
Howdy, does anyone switch from a blurple led board for veg, to a hps or similar style light for flower? Why, why not? Is it worth the little extra hassle to buy and install? I like my led just fine, but wondering if there’s more to be gained in flavor, quality & yield. Thanks!
Setup. Lighting
6y ago
5
2
Solved
Sticky_bandit84
Lights
Anybody know much about the dimmer on the spider farmer sf1000?! What wattages do you used during veg, flower etc..
Setup. Lighting
6y ago
1
1
Solved
Lovemabud
Flip light schedule
1 week into flowering and I need to change lighting schedule, complete reversal from night/day due to cold night tempswhen lights are on. Only way to achieve would be to have 24 hours of dark. There maybe an impact but warmer day temps I'm sure will benefit in the end. Thoughts
Week 4
Setup. Lighting
3y ago
2
2
Solved
ganjermaster
Algun LED para 170x170x270?
Alguien me recomienda un LED de máximo 650€ para 170x170x270? En habitación sin armario
Setup. Lighting
6y ago
3
Solved
1smoke2joints
Lightning question
Hey, Growers! This week I had to open together the two boxes, so now all the plants have both kind of lights. Do you think, it can have a negative effect on them, or maybe it's good at least for the 140cm height White Widow,because the bottom parts get some more light from there?
Week 8
Setup. Lighting
6y ago
1
1
Solved
yourbestbud
Light too hot
I got a Lumii hps 600 watt light I have a fan and a small extractor fan in my tent but temperatures were too high (44 degrees Celsius) how can I cool my tent ? Ducts etc?
Setup. Lighting
3y ago
3
3
Solved
Panzora
When to put the light on?
Hey there, Do you need to put the light on the pots directly after you planted the seeds in the ground? Or do you need to wait untill they poke true the ground and then put the light on them?
Setup. Lighting
5y ago
1
1
Solved
DWCpaqy
Grow light and LST with DWC
I have 1000w(120w) led going 24h and sometimes 18/6h. I look like they love the lamp but I have a new 600 Hps lamp and wounder when I should put this on?And when should I start with LST? I think I can start already? And do you have tips how to LST with DWC. How can I change wa
Week 2
Setup. Lighting
3y ago
1
3
Solved
BENY_TRUBY
Espectro de luz en automáticas
¿Cuándo se debe cambiar la bombilla de crecimiento a floración? Tengo unas autos de exterior a las cuales les doy iluminación extra dentro de casa cuando es de noche. Los focos son neones CFL de 55w y hasta ahora (5 semanas) siempre he usado el CFL con espectro para crecimiento.
Setup. Lighting
3y ago
2
Solved
MyBrainHurts
Should i increase nutes? is 27 celsius too high?
Should i be increasing the nutes? And anyone had any experience with air-cooled reflecters, are they any good? temps wont drop below 27 celsius :(
Week 6
Setup. Lighting
Feeding. Schedule
6y ago
3
5
Solved
ohighoan
Light came on for about 30 seconds about 3 hours into the dark cycle
So Im 3 days into 12/12 and I bumped my timer last night and my light came on suddenly during the dark cycle. I immediately shut it right back off. Was I wrong in shutting it back off right away? Should I be worried about anything?
Week 11
Setup. Lighting
Setup. Other
4y ago
1
Solved
roma79000
Culture intérieure
Bonjour a tous ;) voilà mon problème j'ai un kit de 120x120x200 600W , il fais 30 degrés donc assez chaud je voudrais savoir comment faire pour pouvoir réussir à baisser la chaleur :/... Merci ;)
Setup. Lighting
6y ago
1
2