Bathroom Grow

Hi guys,
I'm new to RIU but I do RIU e'rey day.
Anyways, I am thinking about uysing my bathroom, my main question is:

Is the fan already installed in the bathroom (70cfm) enough to vent 2 plants flowering and 2 plants veg'ing? I am thinking about using a 400 watt for flowering and a 250 for veg. (Let me know if I should do two 400's or two 250's) ???

Second question is:
Should I be worried about mold and wrecking my house with 4 plants?

I keep trying to check the FAQ's but when I click FAQ I don't seem to see anything other than FAQ's about how to use the forums.

Thanks guys, keep rollin rollin rollin

I dont think the bathroom fan will draw enough heat from the room with both of those lights. bathroom fans are simple to remove, then stuff some ducting in there and attach your larger fan. get a humidity tester, if it is way to humid you will have to worry about mold otherwise not so much. if you keep your environment under control you will be fine! lots of people grow indoors. Think about how humid a bathroom is after a shower, you don't get mold then because it dries up. same with the grow, you want your humidity low enough that mold wont grow.

Thanks NoGuts
Any idea what humidity is too much? Like 50% 90%?
I alreaqdy have a humidifier in my house which is at 40% for the hardwood and no mold haha so what should I keep my grow room at?
Also, do you know a good fan or what type of fan I should use for an average sized full bathroom? I know it says in the forums and I will look if you don't know off hand.

Thanks
Produkt

Produkt said:

Thanks NoGuts
Any idea what humidity is too much? Like 50% 90%?
I alreaqdy have a humidifier in my house which is at 40% for the hardwood and no mold haha so what should I keep my grow room at?

Produkt

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40% will be fine. Can even bring it up to 55% in vegs but 405 for flowering is perfect imo.

Ok so the 4 plants are going to create quite a bit though right? So I will need to attach a nice fan in there and suck some air out right?
And is 40% what you keep yours at when flowering?

how big is the bathroom? you will need the sq ft to determine what size fan to vent the area. Are you going to air cool the lights?? what are your ambient temps in the house right now?

Bathroom is 360 cubic feet, I think thats correct. I have 9ft high ceilings and about 5x8 sq foot floor.

I have bought air cooled hoods, so that I can hook up my venting to the hood.

Ambient temps I assume means the normal temps. I usually have the house at between 18 and 20 degrees celcius. My veg room sits perfectly at 25 degrees with my computer running (overclocked) and my lights on.

Ok so I have the air-cooled tuibe running with a 400 watt mh right now, my temps go a little too high, in the 85-90 range sometimes over 90. They don't die but they don't seem to grow much during the day.
I know I need to exhaust it better because right now I just have the light running and a fan blowing around in the room with all the windows open.
I need to exhaust the heat from the air-cooled tube so is the best way to buy some duct and an inline fan?
How many cfm's do I need in my in-line fan and how much of a temp drop will it bring me?

it all depends on the ambient temps of the house... I have 2 inline fans one 6 inch for exhaust of the tent .. 447 cfm.. and a 8inch for cooling the lights 747cfms.. I have 2000 watts running and its about 8 degrees hotter then whatever the temps are in the house with lights on.. so if i keep the house at 70-72 ... my grow temps are 78 -81. much cheaper to run fans then ac. You dont want your temps high or you will get airy buds !

alotaball said:

it all depends on the ambient temps of the house... I have 2 inline fans one 6 inch for exhaust of the tent .. 447 cfm.. and a 8inch for cooling the lights 747cfms.. I have 2000 watts running and its about 8 degrees hotter then whatever the temps are in the house with lights on.. so if i keep the house at 70-72 ... my grow temps are 78 -81. much cheaper to run fans then ac. You dont want your temps high or you will get airy buds !

Click to expand...

So do you think that I should be ok with a single 440cfm inline attached to the 400watt air-cooled tube?