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yes on the watering problem so i've been misting the leaves and stuck a humidifier in there over night and got the humidity up to 70% just for last night. i always have before and am just experimenting with no transplanting. not something i'm likely to repeat, transplanting is easy and it's...

you don't have to be that careful and it costs you a bunch of light as the intensity of the light decreases rapidly with distance. if you use the hand test you can probably get the lights to within two feet, closer if you have an aircooled hood.

... so, i was trying an experiment to do a 12/12 from seed grow. i was also trying to see what happens if you start off with the final pot size to avoid transplanting. and i am doing that in a room with a plant about three weeks from finishing. i am also trying co2 for the first time. well...

you can get pH up at any garden store or you can get some from a pool supply house or big box store that has pool or garden supplies.

you can't veg and flower in the same chamber at the same time because veg requires at least 16 hours of light a day and flowering requires no more than 12 hours of light. most people use 18/6 for veg and 12/12 for flower. the benefit of a veg and flower chamber is that you can set up a...

you are wasting a lot of space by putting the chambers side by side instead of one on top of another. your veg plants will not grow anywhere near as tall as your flowering plants wasting lots of space above the vegging plants. give the vegging space about half the height of the flowering space...

a small thing but links don't show up in a different color than regular text until you run the cursor over the text (at least in my signature)

leaves can droop for several reasons. sometimes a plant will droop over night but recover after an hour or so of light. if it hasn't recovered by then it is probably a water problem - unfortunately both too much and too little water can cause drooping. check the soil. also, it looks like your...

relax, practically impossible to pick out a small grow amongst all those fireplaces and furnaces. tracking grows by thermal signature is only practical for catching large, multiple 1000 watt light grows.

if you're asking if you have enough light for vegging, the answer is yes. you could always add one of the 250 hps to speed up the growth, but it's not necessary. btw, so as not to be misunderstood, do not keep your 250 as close to the plants as you do with cfl's. a good test is to put your...

kinda ironic that "hiroshima" is helping with too much heat (think atomic bomb) things that will help: 1. do as hiroshima says as keep a dedicated duct for the lights: inlet-->duct-->fan-->duct -->light-->duct-->outlet 2. place the carbon filter at the top of the box. have fan to pull...

except for the sprout you should keep cfl lights within 2 inches of the plant tops or you are wasting most of their light.

- 1 Fan intake 8cm + 2 Fan exhaust 8cm "inline" (on the top case).

its air for gods sake, you don't have to filter it coming in unless you live next to a chemical plant and then you have bigger problems:cuss:. for cooling, try ghetto a/c - rotate a bunch of two liter soda bottles between your freezer and grow room. place the frozen bottles in front of a fan...

ah flame war - carbon filters do nothing for relative humidity - if they did they'd be soaking wet after one humid day. nonsense. and the prefilter included with a purchased carbon filter is what removes dust and all macroscopic material. a carbon filter might catch mold spores that pass the...

you're in the outdoor growing section - you can't tell sex naturally outdoors until autumn. you can cover part of the plant for 12 hours each evening until that branch shows sex. indoors you typically cannot tell sex until you've been on a 12/12 lighting cycle for a couple of weeks.

??not sure what your question is - the only thing a carbon filter does is remove smell from the air. it doesn't do any good to filter incoming air.

keep repeating week 3 until you are a week away from 12/12. then go to week 4 and keep following the schedule from there.

ditto. if noise is still a problem web search "duct muffler"

that's a good price if you just need fresh air then exchanging the air every 5 minutes is enough. if you need air to cool then its whatever air exchange gives you the right temps - 5 complete air exchanges per minute is not unusual. it helps but the air itself makes a lot of noise. search...