What 4 piece of seeds need in cellar?

[skulll]

Hello there

I got 4 seeds and would grow them as totally beginner, firstly I read about it, but I got a few questions. I would need sum exact data.
So I would grow them in flat's cellar. (pic attached, thrash will be moved out from there)

1. Only HID lamp is good?
2. If yes, how many & how powerful lamp need for them?
3. Lamps will give enough temperature? How far I should put them from plants?
4. UV lamp is additional or necessary?
5. How powerful UV lamp could be used and how far put them?
6. How much water they need/day?
7. Simple soil is good or should use special?

Sorry for grammatical fails, hope you'll understand and can help me.
Thanks!

 

[Lost in a SOG]

Hps are not the only option.

Hps wastes energy in infra red light. LEDs now provide more targeted photosythetic energy.

LEDs have longer lifetimes and produce less heat for the plant growth they produce.

There are good and poor led lights available.

You do not need UV lights.. UVA and some UVB is proven to induce some benefits in cannabis BUT for you as a beginner just forget about UV all together. Most lights that have some blue contain some UV.

The watering amount will totally vary as they grow. To begin its very easy to over water, what most rational people do is to lift the pots and see how heavy they are..

Just medium weight in seedling stage or you will likely kill them as they cannot drink much.. watering needs for plants is relative to amount of leaves capable of transpiring and how ideal your humidity, light levels and soil pH are. They prefer keeping medium weight in terms of watering right the way through and they also prefer multiple smaller waterings in a day rather than drowning. Also try to water in the middle of their flowering day.

Eventually in a 5 gallon pot, for example, when they are large plants they should need 1L to 2L or more but it depends on how well you grow them.

Humidity is hugely important, there is an ideal range you need to stay within. Its roughly 55-70% in veg and 45-60 in flower. And dont let your temperature go above 30 celcius.

Cannabis likes well draining soil with a solid pH around 5.8-6.2. She also does not like high Nitrogen soil in flower or she will be stunted. Going for something around 3:5:4 NPK is safer.

So yes imo "special soil" is better and better to learn what soil she likes sooner rather than later.

Seedling soil wants to be sterile and quite weak in nutrients and fine NOT chunky and coarse or it is probable that bacteria or fungus gnat larvae will kill them..

 

[skulll]

Hps are not the only option.

Hps wastes energy in infra red light. LEDs now provide more targeted photosythetic energy.

LEDs have longer lifetimes and produce less heat for the plant growth they produce.

There are good and poor led lights available.

You do not need UV lights.. UVA and some UVB is proven to induce some benefits in cannabis BUT for you as a beginner just forget about UV all together. Most lights that have some blue contain some UV.

The watering amount will totally vary as they grow. To begin its very easy to over water, what most rational people do is to lift the pots and see how heavy they are..

Just medium weight in seedling stage or you will likely kill them as they cannot drink much.. watering needs for plants is relative to amount of leaves capable of transpiring and how ideal your humidity, light levels and soil pH are. They prefer keeping medium weight in terms of watering right the way through and they also prefer multiple smaller waterings in a day rather than drowning. Also try to water in the middle of their flowering day.

Eventually in a 5 gallon pot, for example, when they are large plants they should need 1L to 2L or more but it depends on how well you grow them.

Humidity is hugely important, there is an ideal range you need to stay within. Its roughly 55-70% in veg and 45-60 in flower. And dont let your temperature go above 30 celcius.

Cannabis likes well draining soil with a solid pH around 5.8-6.2. She also does not like high Nitrogen soil in flower or she will be stunted. Going for something around 3:5:4 NPK is safer.

So yes imo "special soil" is better and better to learn what soil she likes sooner rather than later.

Seedling soil wants to be sterile and quite weak in nutrients and fine NOT chunky and coarse or it is probable that bacteria or fungus gnat larvae will kill them..

Thanks for fast reply.
LED can generate enough warmth? I really dont know what lamp I should use and how far from plants
What type of LED would be great and how powerful?
UV provides higher THC, right? Whats wrong could happen if I use as beginner?
I think humidity is not ideal in cellar, but enough water could compensate it?
About pH... I know nothing about yet good soil will take care for me?
Sorry for noob questions and thanks for help.

 

[Douglas.Curtis]

Humidity is hugely important, there is an ideal range you need to stay within. Its roughly 55-70% in veg and 45-60 in flower. And dont let your temperature go above 30 celcius.

Great points, except we completely disagree on temp/humidity choices during flower. I vastly prefer cool and dry temps over hot and wet.

My main goal is the least amount of plant, with the highest amount of resin and terpenes possible.

 

[skulll]

Im reading forums & amazing google about lamps and Im just confused af.
Would use LED but i dont know what type of led and how watts I will need for 4 plants..
Any idea?

 

[skulll]

Sorry for double post, didnt find edit button yet lol.

People say leds are heating well too and not using less energy. Whats the truth?

 

[MrBungle]

I personally prefer HID over LED.... I've never spent big money on an LED array, but I have seen grows under them.... maybe there is a different learning curve with LEDs, but I think it is easier to be successful with HID.. even if it wastes energy and doesn't utilize the exact wavelengths... it penetrates the canopy better than any other lighting source not named The Sun...


For 4 plants you can get away with a 600 watt ballast, but you probably want to just get the 1kw...



Forget the conventional horizontal lighting.. make a vertical set up, then you don't have to worry as much about head space...



UV lamp is not necessary and will do damage to your eyes, and break down things made of plastic and rubber over time, unless you protect everything properly


How much water depends on how big you plan to grow them


And good soil is better than not good soil.... remember this will take the better part of 3-4 months from plant to harvest.. no point in cutting corners, you will only be disappointed with the final results

 

[art.spliff]

Special soil most definitely. The soil itself or else the fertilizer if you do not use a special soil is probably the most important part. Actually soil fertilizer good airflow and good light are all most important parts. Organic soil mixed well and pH tested at home with weeks or months to allow worms and microorganisms to digest it first will work better than fresh mixed soil because the materials are more available to the plants after being digested. Using a non-special soil with bottle fertilizers is rather complicated and costly at times. Soil with organic fertilizer in it already is probably easier for a beginner. And professionals use organic soil too.

4 seedlings one small cfl or led bulb is fine right above the plants. Keep them warm 65-75 degrees F if possible. After they reach 2-3 sets of leaves,

T5 T8 T12 CFL fluorescent LED are all good for vegetative growth and if you wish flowering. After 2-4+ weeks under 18-24 hour vegetative growth,

250w 400w HPS ballast, LED fixture or screw in bulbs, CMH are all good lights for flowering. Even a second hand light is ok, in which case you may be able to afford another ventilation fan for example.

Airflow is important. Notice how many circulating fans, and exhaust fans or HVAC units there are in grow rooms. The most economical way to keep humidity down is to move a lot of air through the grow area (instead of using a dehumidifier for example). Somewhere on both sides/ends of the cellar there should (or rather needs to be) an open window or box fan with a bug screen/filter running 12-24 hours/day. May not be necessary if the cellar is large compared to 4 plants although soil, water, light, airflow ~= growth.

 

[skulll]

I would be happy if I could use only one lamp from start to finish.
Would be goood a 300W LED cold light 6500k lamp for me?

+ about ph, how i should control it?

 

[Lost in a SOG]

Great points, except we completely disagree on temp/humidity choices during flower. I vastly prefer cool and dry temps over hot and wet.

My main goal is the least amount of plant, with the highest amount of resin and terpenes possible.

Yes last couple weeks of flw you can go as low as 40%.. but i fimd thats more essential to push so far outside vpd when using co2 to balance out the stomatal closure caused by increased co2.

Its not a blanket rule in all situations and if you have very high temps then obviously pulling the RH that low will stress em a bit especially in early flower.. after stretch you can pull down the RH as much as you can.

 

[art.spliff]

The Mars Hydro SP-150 Full Spectrum LED Grow Bar draws 135 watts at the wall and covers up to a 2'x2' area for flowering. This fixture is ideal for a seedling to harvest grow in a grow tent or in a grow room.

Natural soil growing is possible without a pH meter. There are several ways to check and adjust pH. Peat moss, limestone, lemon juice, potassium hydroxide are some examples.

 

[Lost in a SOG]

I would be happy if I could use only one lamp from start to finish.
Would be goood a 300W LED cold light 6500k lamp for me?
View Image

+ about ph, how i should control it?

6500k is far too blue to flower and finish cannabis.. you want 3500k as a decent middle ground both good for flower and veg..

PH with an organic soil mix is buffered usually by the correct mix of calcium carbonate and peat a long with all of the ingredients needed to make organic soil such as matured cow manure, worm castings coco husk, dolomite, kelp, bone meal, rock phosphate, bird guano, perlite/pumice, diatomacious earth, alfalfa meal etc....

You can find organic soil mixes here on IC or buy them.. if you make your own, use big pots or beds, and add aerated plant compost teas to feed in the microbes you can keep using the soil for several years.

What country are you in?

Leds might not be ideal for you at this stage and you may find as was well suggested at this point a 600w hps is more effective for you if you live in a cold place. Its up to you.

 

[skulll]

Im reading forums & amazing google about lamps and Im just confused af.
Would use LED but i dont know what type of led and how watts I will need for 4 plants..
Any idea?

6500k is far too blue to flower and finish cannabis.. you want 3500k as a decent middle ground both good for flower and veg..

PH with an organic soil mix is buffered usually by the correct mix of calcium carbonate and peat a long with all of the ingredients needed to make organic soil such as matured cow manure, worm castings coco husk, dolomite, kelp, bone meal, rock phosphate, bird guano, perlite/pumice, diatomacious earth, alfalfa meal etc....

You can find organic soil mixes here on IC or buy them.. if you make your own, use big pots or beds, and add aerated plant compost teas to feed in the microbes you can keep using the soil for several years.

What country are you in?

Leds might not be ideal for you at this stage and you may find as was well suggested at this point a 600w hps is more effective for you if you live in a cold place. Its up to you.

Thanks for reply. I found a lot of information there:
https://420bigbud.com/how-to-grow-weed-part-3/
It says between 5-7k is ideal. Now im again confused, whats the truth now?
This 200w led would be great for my wallet and internet says it would be ok for plants too.

5K – 7K Kelvin: Strong Blue Light. Promotes bushy growth. Ideal for rapid growth phase of plants. This greatly enhances all-around plant growth when used with super high output, (such as high pressure sodium or 3K warm metal halide lamps).

4.2K – 4200 Kelvin: Cool White Flourescents. Can be used as supplemental blue lighting when used with a 3K source.

4K -4000 Kelvin: Neutral Metal Halide. Best single source for plant growth, producing shorter, bushier growth than 3700 Kelvin and color rendition. Used in general plant lighting.

3.7K – 3700 Kelvin: Softer Metal Halide(coated). This coated lamp is used in general plant lighting and for more rapid growth than 4000 Kelvin produces.

3K – 3200 Kelvin: Warm Metal Halide. Highest photosynthetically active radiation (PAR) value of all HID lighting for all phases of plant growth. PAR watts account for the nutritional value of light and are a direct measure of the light energy available for photosythesis.

2.7K – 2700 Kelvin: High Pressure Sodium Lamps. Redder color mix, used for propagation, blooming, supplemental greenhouse lighting.

 

[skulll]

or I got another 200w led with 5000K.

 

[Lost in a SOG]

5k is still imo only good for vegging my friend.

I still wouldnt flower under a 4k tbh but they again make decent veg lights.

What continent are you on? I might be able to give you a suggestion based on that.. whats your budget for a light?

Also how cold will it get in the middle of winter where you are?

 

[skulll]

5k is still imo only good for vegging my friend.

I still wouldnt flower under a 4k tbh but they again make decent veg lights.

What continent are you on? I might be able to give you a suggestion based on that.. whats your budget for a light?

Also how cold will it get in the middle of winter where you are?

So should I use 2 lamps, one about 5k and one about 3-4k? Im in EU, I would be happy with 50-80 eur lamp, would not spend 100.
Winter here is so cold, between minus 15-25 sometimes -30C°.

Is adjustable color temperature led light is exist?


+1 simple bulb could stress the plant later? Sometimes were going to cellar and there is a simplre poor warmth lamp.

 

[Lost in a SOG]

So imo if it gets that cold i would abandon the led idea and get a hps.

Just to repeat again.. for flowers and to simulate late summer 3.5k is the highest kelvin you would want. It still has some blue and you can veg under it. Still as i said id probably advise the hps now seeing how cold it gets where you are.

 

[Leaflet]

Get a 1000 watt HID light with a Metal Halide (MH) bulb for the vegetative stage and a High Pressure Sodium (HPS) bulb for the flowering stage.

 

[MrBungle]

High pressure sodium provides more than enough blue spectrum to veg in as well... especially the high end bulbs with added blue spectrum

 

[skulll]

Im just wondering about a smple 100w 3000-4000K led or 100w spektrum led. Maybe not best quality cuz second handed and not big branded but if i would know which would be better i would gooooo seeeeeedling nowwwwwwww