help wanna start again what is safe

OK that picture from below is from my 1st grow which it went out BAD and my 1st hydro fail because i didnt know what to do. it took me about 5 months and i ended up with 2 ounce. and cost me about $1300 but the dope was petty damm good. i was using 400 watt HM and didnt know about hps is better for buddin at the time.


well i want to start fresh. need to know about a few things.

Venting so i take H x L x W = x then i dived by 5 and thats what i cfm infan i need to vent my space??
so say i my space is 9x9x9=729 then 729/ 5=145 cfm so i would need a 150 cfm intake fan and it would be on 5min on and 5 min off? or somthing?

power and wiring so i kindof understand but if u know where i can go to learn more about eletric stuff let me know. the outlet from my room is 15 amp which i going to used for my fan,pump and timer.also i can used have a 20 amp from the kitchen ( stove pulg). coould i just used extection core to that pulg and used it for 4 1000 watt light with out buring my place down. will for be under the 75 cap. rating?

how do i wire 4 1000 watt light without burning my place
how do i make a relay board also is the wire in the outlet/building is safe for growing weed?

im planing for my second grow so i dont wanna waste money or time i also dont want to do anything unsafe. i have 17 clone right now in my areo thing and 8 plants growing under 400 HM for now and im plan on getting some 1000 hm and 3 1000 hps so i want to do everything safe and as for the growing part i know how to do it right so that part is all good

you are going to need atleast 1 vortex 8" inline fan if not a 10" or hell maybe even a 12"
because you're going to have a lot of heat with 4x1000watters, wow...sounds fun...as far as electrical, you need ballist for each one tied into its own plugin thats mounted 3-4 foot up on a wall with a fan blowing on them preferably. keep the ballist cool and everything will burn better and more effic. you need to have a 60 amp breaker with a wire big enough to run it from the main panal to your room. but use 110 and dont try this if you dont know what youre doing. for those fans, 4x lights,pumps,humidifiers, air conditioners, heaters, its going to take a lot pf electricity if you do it right. well from the power you ran into the room connect all your sockets waterproof them and keep everything waist high or more. run your 10-12" exhaust from hi in the room to out the roof of the room. this is all i can type 4 now..................

so my math is all wrong dose anyone know where i can go to find out more about amp rating,amp and safety. i was goin to run 2 1000 hm then when flowering comes i want to used 4 1000 watt light. im thinking of gettin a cool tube for each light . i dont need a heater. cuz it gonna get hot but i goin to get ac tho. where do i get the 60 amp beaker??

and i want to make this https://www.rollitup.org/do-yourself/131039-diy-4-6-light-controller.html
will that protect my place goin off
https://www.rollitup.org/do-yourself/131039-diy-4-6-light-controller.html

anyone?? can help a bit more??

your fan formula is correct
I used that formula to derive at the one to use in my room
It works
I thought it would be too small but it's doing the job.
Right now I just have it on for 15 minutes per hour.
But based on how you use it will determine your running time/speed.
If you have it set up as an exhuast, then you will want to have it on a thermostat. You may need to run it more often if you have a filter on it and it's doubling as a scrubber too. So if smell is a big issue and it's not running enough then you can have it on a timer too, or have it on a speed controller to run it low full time etc. There are ways to combine the two systems on here on how to do that. I know Al B Fuct on his sticky in hydro has a nice setup that allows you to run it on low and then full blast when it gets too hot. Again, your needs will determine running time/speed.

On your electrical question. Even before asking specific questions on it. I would go to lowes or some home supply store and pick up a copy on house wiring and electric. They are great at teaching basics and how to do things. Better yet, the library has these books too. I like books still more than internet research, because I can carry it around with me and use it on the shitter. (wait, can a lap top not do all of this?) Even a quick run through on one of these books would clear up half if not all of your electrical questions there.

clean out the room and hire an electrician...dont want to burn the place down.

Well.. if I could offer some electrical advice....

Your house/apartment, or whatever you live in, will not burn down from electrical problems. I say this lightly..... If you house does burn down it will be from the heat of those 4 - 1000W HPS lights you plan on buying.

Electrically speaking.. If you have too much power drawing from the circuit (by circuit, I mean the wire that is daisy chained from the lights and/or electrical outlets to your electrical panel, which is probably in your basement) Typically, each breaker (each black switch on your electrical panel) is intended for 1200 Watts. (by design) - (except for your furnace or dryer, or anything with a motor, etc..)so...., if you plug in 4 1000W lights into one circuit. (4000W>1200W) the breaker will "trip" meaning, switch off automatically. And you will have to go to you basement at physically switch the breaker back on. And if your 4 - 1000W lights are still plugged in to the same circuit, it will 'trip' again. and the process will repeat itself.

This is because.... The more power you draw from a single circuit, the hotter the actual wire gets. (temperature I mean), so the wire going back to your electrical panel does not over heat and catch fire, the electrical panel is designed to swich off before a fire can occur.

As for fans.. As a rule of thumb. It is easier for a fan to suck than to blow. Suck the hot air out of the space, rather than blow cool air into the space. If you have two fans, they should both suck. if you can attach ducting to them, place the ducting as close to the light as possible and draw the heat it produces out of the space. Eliminate the heat from the source!, don't put the exhaust fan in a corner of a room and expect it to be adequate.

Fans are usually rated in 'cfm' 'cubic feet per minute', calculate the volume of your space (LxWxH), for example, say 300ft cubed. a 100 cfm fan could exhaust all of the air in that space in 3 minutes. (volume of space/cfm of fan = time to exhaust all of the ir in that space.) this will exhaust the hot air from the space, bear in mind where that air is going, outside?, into your bedroom (from your closet?) , also bear in mind if you want your closet to be 72 degrees and the air in your room (adjacent to the closet) is < 72 degrees. your closet will never cool down without external cooling, and that is another story......

I hope this helps... good luck

i was gonna used my room plug for pump , fans and venting each light with a cool tube. im gonna cut a hole leading to the bathroom vent by cutting a hole and i have 2 20 amp from the kithen so im goin to get the light controller or make one and only used what i be limit too . but before i do this i want a full understanding of electrical . and i was planing on using a passive flow and pull cold air from outside if i can if not then i get a a/c. dose that sound good?>