Basic lighting info for me will only take 2 secs

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nimaorange

New Member
Hey well I am going to be getting a 400 W hid and have like 100 W of additional side CFL lighting with 4 plants. Would i be able to fit more under this light? Also i may have a seperate box with a 300 W cfl with 50 W additional cfl lighting on sides how much would i get from this and how many cud i put under this? Thanks!
 
hey there,

It is recommend that you provide your plants 50 watts of grow light per square foot in the growing area. Insufficient light will result in unhealthy leggy plants that produce low yields.

you can use this formula:
Square footage (length × width) of your room × 50 (wattage) = The watts needed

usually you can put one plant per square foot, but in order to determine how many plants to grow in your grow room you need to determine first your growin technique (if you are going to use trainning or not, etc) and the yield will depend on various factors and variables, as optimum light, humidity, pH, nutrients, air flow, temperatures, and most importantly: the grow technique

in my opinion SCROG is the higher yielder, but if you need to harvest faster you could use SOG, it all depends on your needs.

cheers :)
 
nimaorange said:
So i guess i Could go for 5 under the 400 W with additional lighting and 6 autos under 400 W?
Click to expand...

if you're not concerned about space, the answer is yes, you have enough light for that number of plants.

remember CFL's have to bee very close to your plant's canopy (8 inches or closer) and you should have a fan blowing 24hr a day for propper air circulation and temperature regulation.
 
:) well Im going to have a cupboard which is 6-7 ft tall. Wud i be able to get 4 plants in there? Also how tall of a space wud u reccomend for the autos??? Also for the big cupboard i am going to have an extractor fan which will be 4 inch in size and have an airflow of 180 mh/s or i might get one which is 120 mh/s. THe thing is how much air should i have BLOWING in from the bottom? will an air vent suffice or should i install ONE PC fan there for would 2 be better? At around 40 mh/s at bottom of air coming in would be enough right?
 
also is a ballast absolutely required for the 400 w HID? THe 300 W cfl im going to use for the Autos will just be a plug and play one with no ballast and the side lighting i do get for the 2 spaces would just be added on using a clip on bulk/lamp fixture and a 50/100 cfl additional lighting.... Going abit off topic here but when you feed your plants do you include mix water/nutes and water as normal when feeding? Also what would you reccomend. I am going to transplant my normal plants but my autos i am going to use the light mix soil all the way. Biobizz products. Going to use just grow,bloom,topmax and epsom salts. Would transplanting or layering the first 2.5 inches of soil then the rest of the soil in the pot with all mix? What pots would you reccomend for seedlings and what pots should i transplant them into? Or what pot should i keep my lightmix autos in for all the way trhough? Thanks this wud be a GREAT help.
 
Nima, you would benifit greatly from readying the sticky post at the top of this forum. For your airflow, mh/s is not a rating used for flow of a fan. they are rated in CFM (cubic feet per min) or CLH (cubic liters per hour). You want to cycle the air in your grow area at least 4 times per hour min.
 
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