Start My Diary
Start My Diary
Login
Start My Diary
Home
Diaries
Strains
Shorts
Questions
Contests
Growers
Breeders
Nutrients
Equipment
Blog
Login
Sign Up
Following
Follow
Brands
&
Growers
to get updates
By continuing to use the website or clicking Accept you consent to our cookies and personal data policy and confirm that you are at least 18 year old. For details please see Privacy Policy and Terms
Accept
Back to Grow Questions
Adding in an LED board for the last 2-3 weeks of flowering?
Dudders
started grow question 4y 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 4y 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
hirund
Should I switch to flowering now?
The height of my growbox is 120cm (4 feet) and I'm afraid that sativa can grow taller than that.
Week 2
Setup. Lighting
5y ago
3
3
Solved
Kalimeros
Dialing in light intensity, HLG 350R's
Need guidance for light distance and intensity please. I'm using two HLG 350R's in a 5'x5'. Thanks!
Setup. Lighting
3y ago
5
6
Solved
iiSNEEXx
Clones and still be 1 grow
How many clones can I take from this plant and still be able to do the main plant and the Clones all-in-one grow together? Also how many plants can I do a fishing lie with the 600 watt vivosun LED in a 4 by 4 by 6 vivosun tent?
Week 4
Setup. Clones
Setup. Lighting
4y ago
3
2
Solved
Puppylove
Lights led vs hps cooltube
Hi how are we fellow growers, here is my query, am using 2 hps 600watt cooltube in a 1x2x2 growtent,notice cold grow spots out of direct light, am I better using 3 400 watt cooltube, or changing to led, again looking full even coverage over entire area.
Setup. Lighting
2y ago
2
5
Solved
Flyalivebeats
Light schedule
When growing auto flowers, is it ok to run 18/6 for the entire grow? Or should you do 12/12 during flower?
Setup. Lighting
4y ago
2
2
Solved
stonersupplyclub
Seeds sprouted above soil some have helmet head some don't but need guidance?
18/18 seeds pop & are now under 2 - 2ft-75w 105 PAR lights set to blue only on a 12/12 sched as they are going outside once warmer. Lights are sitting ~12in above the humidity dome & heat mat? 1. Are the lights OP at this stage? 2 can i take the humidity dome & turn mat off yet
Setup. Lighting
Setup. Seedling
Germination. Other
3y ago
1
Solved
Doolymoo
Light for seedlings
What light cycle shld I put seedlings under? Or best just on window sill (I’m in uk so not much sun atm!)
Week 1
Setup. Lighting
6y ago
5
5
Solved
Jmaninthemidde420
Can you use a 450 watt white led light to start seedlings? If so what distance should the light be and when should I make it closer? The reason I am asking this is because I don’t like transplanting autos as they are fragile to transplanting from what I’ve looked up
Setup. Lighting
3y ago
1
1
Solved
hooolian
24 hours daylight in flower mistake
I have made a mistake - have 4 tent set ups each different digi light timers - this tent has mistakenly been left on (24 hours daylight!) for just over a week - should be week 4 flower. can it be saved? any advice? I have put it right so should get the 12 hours dark like the rest
Setup. Lighting
3y ago
3
3
Solved
AhHeeeeeeee
Growing with 12v?
What if I took my plants on a jaunt, say a week, in a small (vwt4) camper? Is there such thing as a 12v light that’s suitable?
Setup. Lighting
4y ago
3
4
Solved
SmokinJuan
Is My LED Strong Enough To Grow And Bud 2 Plants?
Hey guys, I'm currently growing 2 plants under a 600w LED... I think it's actually closer to 100w. I'm getting about 20k lux from 10inches away... Do I need another more powerful light for flowering? Help please it's my first grow XD
Setup. Lighting
5y ago
5
4
Solved
Mel_Macallan
Led mounted on side wall instead of top
So I'm thinking about to build a pc grow box, just for seedlings. When they start to be bigger I'll move them to bigger grow box. I have a spare grow light but it's to wide to mount in top of grow box. So I was wondering if I could mount it on the side wall?
Setup. Lighting
5y ago
4
6
Solved
GeminiCQC
Help with issues ID
I have a photoperiod in a 5 gal using BAS light. It is currently day 3 of week 4 , and I'm getting some damage on the tops. Would this be light stress or another issue? The tips are starting to go light green. Using the 200 watt light for the 2x4x8 ac infinity tent.
Leaves. Tips - Burnt
Setup. Strains - Photoperiod
Setup. Lighting
1y ago
2
2
Solved
Bushbaby808
Veg or Bloom mode for Autoflower?
Hiya Folks 😊 As I'm growing an autoflower should I be using the bloom setting on my LED light instead of veg setting? It's only a 200w system and I'm growing in a 3'x3'x6' tent. My plant has just done 28 days from seed!! Cheers 😉
Week 5
Setup. Lighting
5y ago
3
3
Solved
odrex
Should I switch to 12/12 lighting? - Autoflowers not showing pistils after 5 weeks
Growing five plants (germinated Sept 8) including 3 Anvil and 2 BlackStrap autoflower strains from Mandalorian Genetics. The BlackStraps have been showing pistils since about end of week 3. No Anvil plants are showing pistils. Should I switch the lighting schedule to 12/12?
Week 5
Plant. Other
Setup. Lighting
4y ago
3
3
Solved
Hou_Stone
a good lamp ?
Good morning, Currently I have an hps and I'm looking to invest in a good lamp. Do you have a good one to recommend? I have a room 100x100x200 cm Currently I want to take the mars hydro fc3000 I am not sure if it is powerful enough for my room? I would like to have opinions
Setup. Lighting
3y ago
4
6
Solved
Theia
Autos and light schedules
Last night my light timer broke. How sensitive are autos to their light schedule being messed with? i was on a 16/8 for the lsat few weeks. Last night my timer broke and i did not realise until midday. Now shes been in the dark for nearly 12 hrs!! Should i expect some issues ?
Week 9
Setup. Lighting
5y ago
3
3
Solved
CampaCavallo
NEW LED HELP FOR NEW NEXT INDOOR SEASON
At the end of September, the indoor season of CampaCavallo starts again! We need a new light and this time LED. I'm looking for one that can replace HPS 250w without spending a fortune .... Any advice? I also accept discounts or donations from producers in exchange for advertisin
Setup. Lighting
3y ago
4
4
Solved
NarcissisticEcho
Lights. Please explain to a newbie
How much light does a seedling need? How many watts? Is it better to have one bulb but closer to a plant, or 4 bulbs and higher from a plant? Does it matter how many plants are under the light if they don't shade each other? Do plants "steal" rays so its better to have 1 plant?
Setup. Lighting
4y ago
5
4
Solved
Abacus
How to use a led lamp
How do you use a dimmerable full spectrum led lamp? When full power? When less? Distances?
Setup. Lighting
3y ago
1