Chat

By continuing to use the website or clicking Accept you consent to our cookies and personal data policy. For details please see Privacy Policy

Accept

Recommended

Recommended

Grow QuestionsHow many watts do I need for my small tent?

How many watts do I need for my small tent?

noobiiistarted grow question 3 years ago

I am using a full spectrum LED that draws only 30W from the wall but it might be too weak since my plant is getting lanky. I have moved it closer to the plant but now I am afraid of over-heating. How many watts LED would be sufficient for my 40cmX40cmx120cm tent?

Solved

Plant. Too tall

Plant. Stem - Weak

Setup. Lighting

like

LeastExpectedGroweranswered grow question 3 years ago

Meter that light if you can...that's really the only way to really know what it's delivering at any given height, though 30w seems scant at best. You might want to look into running your light 20/4 or even 24h to make up for lack of firepower with extra exposure time...you'll probably have a better chance of success. Before I went and bought a higher powered light I was sitting with ~100w or so and an experienced professional grower suggested I go 20/4 or 24h to make up for lack of delivered PPFD.

1 like

Complain

Selected By The Grower

BostonGirlGrowsanswered grow question 3 years ago

You wanna have 30-40 real watts per square foot. By real watts I mean what the light fixture pulls from the wall- not the watt rating the manufacturer has on that specific model. I’m currently running enfun lights. They are called EF2000- but actually pull 240 real what’s from the wall. 🌱

1 like

Complain

Similar Grow Questions

Solved

Lights Hi guys! What light should I get? The viparspectra xs1000 or the marshydro ts1000? I intend to grow in a 2x2 space. Would the viparspectra be as bright as the marshydro because its more efficient?

Setup. Lighting

7 months ago

1

3

Solved

Harvest in 2 times, seeking advice, top big branch/buds first and then lower Now 7 days from harvest. 3 plants with cloudy tricomes, no spottted ambar it's fine. Is necessary to harvest in 2 times? Give a week more for the bottom "popcorn" buds and the third plant, shorter in shadow? Should I cut whole largest branches entirely, or cut all at same height

Buds. Other

Other. Harvest - Drying

Plant. Too tall

7 months ago

5

3

Solved

what ppfd for 20/4 autoflower?Just bought the FC-4800 and before this I had always measured my light using inches away from canopy however I want to learn how to use the light using PPFD. I have found average measurements online but what should I aim for for a 20/4 autoflower schedule please? Thankyou!

Setup. Lighting

8 months ago

2

5

Solved

What lamp to start growing (cheap)?I want to grow 1 or 2 plants but i cant find a cheap lamp for my preference. I ordered Northern Autos and DoSiDos Auto. Im planning to plant one of each. I´ve got 36cmx36cmx140cm im growing without a box i will try building it myself. is it enough space for 2 plants and wich lamp

Setup. Lighting

8 months ago

13

10

Solved

Lux Meter and Hydroponics Who has experience with using LUX meters to position lights in various stages of hydroponic growth. I feel I am giving mine too much light, based on the readings, but don't want to pull them back. Currently 10" from the plants.

Setup. Lighting

8 months ago

6

6

Solved

MarsHydro FCE4800 for a 4x4 grow?Is the MARS HYDRO FC-E4800 480w the best option to use for my 4x4 tent. Will be doing 9 CBD auto flowers as a hobby. Would you suggest any alternatives? Really appreciate all the advice and will be making my purchase with the advice you have all given me so far!

Setup. Lighting

8 months ago

1

5

Solved

Is this MarsHydro light the best choice for my 4x4?Is the MARS HYDRO Smart FC-E6500 Bridgelux 680w the best option to use for my 4x4 tent. Will be doing 9 CBD auto flowers as a hobby. Thankyou community!

Setup. Lighting

8 months ago

2

2

Solved

MarcoCasanova00

Too much light or PH imbalance?I dont know, something strange about the color, the spots on the leaves maybe? suggestions accepted. Maybe I need to add a fan ASAP, or let more air into the tent? Dimmer is sset to 20% 25% , maybe I should give more light? or maybe less?

Leaves. Color - Yellow

Leaves. Color - Pale

Setup. Lighting

8 months ago

2

2

Solved

best LED light 4x4 Best LED grow light for a 4x4 Could anybody please suggest which LED light they would recommend for a 4x4 grow. Willing to spend around £500 maximum as I really want to invest however most videos on YouTube are marketing their own. Really appreciate your advice. Many thanks!

Setup. Lighting

8 months ago

25

12

Solved

Desktop mode or what??How come when I go to select strain breeder etc it doesn’t let me scroll down and choose what I want I literally have to choose something I’m not growing and write what it actually is in description never had this issue growdairy.. I posted a pic of what I’m talking about scrol

Plant. Too tall

8 months ago

2

4

Solved

MrShortTermMemory

Lighting cycle for VEG stage. Is 24x7 OK?Hi, Should I use the VEG lights 24x7 from the time I plant my seed until it's ready to bloom, or would something like 18 hours on and 6 hours off make more sense? Is there a "best practice" for veg lighting? It has worked for my first 3 grows. VIPARSPECTRA 600W LED Thanks, Mr.STM

Setup. Lighting

8 months ago

7

7

Solved

Light intensity My plants have been looking sad for a couple weeks. Tried everything then the other night I turned my light down to 40% giving a DLI of 28 they perked right up with 24 hours. I have now put it up to 60% giving a DLI off 39 will this be ok or should I keep it low. Week 2 flower.

Setup. Lighting

8 months ago

1

2

Solved

Got a Mars Hydro TS600, will it do alright?My plan is to grow only 1 plant, in a 40x40x120 tent. I know the tent is pretty small but hopefully i can do some training on the plant to grow wide Will the light do until the end? 100wats, but no light dim possibility. Currently growing seedling at 13 dli at 60 cm

Setup. Lighting

9 months ago

2

1

Solved

Bad idea?Will a mars hydro TS1000 be too strong for a 60x60x140cm tent? I have been using a TS600 and TS1000 in tandem in a tent 4x too big for the light level, I have been growing strong and tasty buds but with low yields so downsizing my tent size to maximise the light.

Other. General questions

Setup. Lighting

9 months ago

3

3

Solved

Booster light did not turn off during night time 6th week of flowering AUTOFLOWERS 20/4 I accidentally left 20w 600mn booster for 3h during dark period (I noticed as switched off) Will they hermy? To be honest my growbox has holes so it was never a total balckness.

Setup. Lighting

5 months ago

6

5

Solved

Can I let them grow like this?Hi, my grow tent is getting a little bit small. do you guys think I can let them roll like this? is this still okayish environment? The alternative would be to take one out and let the other grow in peace… Thanks for helping!

Plant. Too tall

5 months ago

1

1

Solved

Good timing or terrible decision?Hey everyone, my 60×60×180 tent was getting packed. In order not to take my Tropicana Cookies Auto out, I tried to lollipop it. Do you guys think it has a chance to produce some decent buds on top or did I ruin the plant? It’s day 30, I’d say pre flower?

Plant. Too tall

5 months ago

1

1

Solved

Light watt Ts1000 150 Watt mars hydro. Will this grow 3 plants?

Setup. Lighting

5 months ago

1

1

Solved

First grow. Growing autos from meph in a 3x3 tent. They are in the w/3 of flower. On 24 hr light.(Accidentally) having a heat wave in my area and can't keeps temps down below 80-85. Will it hurt anything to switch to 18/6 now so I can have lights off when it's hottest part of day

Buds. Other

Setup. Lighting

5 months ago

7

5

Solved

When to switch to red?Hey all growmies. I have a 420 FB Purple Punch going. She’s three weeks old tomorrow from sprout. I’ve had her under blue light so far. When do you reckon I should switch to red spectrum light? What do you guys think?

Setup. Lighting

5 months ago

3