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used on ebay - or ask look and ask on craisglist - always someone wanting to be an exgrower or a bigger grower -no reason to buy new if you're on a budget

mni-gens are built with burners that promote complete combustion to co2 whereas water heaters and the like are built with burners to maximize heat transfer to a liquid and in that design you lose a lot of the efficiency of burning and it results in some portion of the exhaust being carbon...

Ok, first the article. this will be oxymoronic but don't believe anything you read on the internet. that guy just told everybody how to get killed. there is a real risk of high levels of carbon monoxide being shunted to your grow room, and by "high" I mean 100PPM when it comes to carbon...

any commercial co2 approach is going to cost you several hundred upfront and I'd on $20 of propane a week. even a room you think is "tight" is likely to exchange and or consume co2 completely within a couple of hours. if you can't afford that, you can always try the diy yeast way - lots more...

You're as protected as you were before the dispensary opened - which is to say legal by state law, illegal by federal law. Most of the comments here are spot on - you can grow as long as the card you have says you can grow and is valid. The state will stop issuing renewals with grow rights if...

my growing friend. may you always be as fortunate as you have been so far. i would just like to point out that you are posting details in an open forum about a system you are putting in that will be illegal in a few short months. mmmmm

There is sooo much mis information floating around. i'll try not to add. here's the deal - the 25 mile rule was a part of prop 203, not the government rules, and the only way that is going to change is with another citizen's initiative that modifies prop 203, or technically, you can change it...

We're all going to face a big choice when the first dispensary opens, maybe as early as this August. Legally, each of us will be able to grow until our annual patient or caregiver card expires. After that, growing would be treated under the criminal code in Arizona, not the most lenient state...

i would humbly suggest it would be better to threaten to not vote for obama in return for the recent actions, and to use mmj as a forcing wedge issue. that way he can only lose votes if he opposes and gain votes if he supports. poly sci 101

You'll get it at it's best if you wait three weeks, give or take a few days

didn't know u already had tank with regulator. In your special case that monitor does make sense because you can obviously adjust your regulator manually to reach 1500 ppm - much better results than using a timer.

Very limited usefulness since it doesn't control co2. You can safely assume your plants are getting at least the natural outdoor amount of co2 without a monitor - see co2 link below - but to give your plants enhanced co2 in most situations requires a controller. In those cases where u can make...

Depends on what u have to work with. Is there any air vent at all in the closet itself? If so, then you can push hot air out that duct with a small fan. If no vent, can you cut a hole in the wall to access your home's hvac ducts? If no vents and no holes then your closet is always going to...

Your veg lighting and space are not that critical to yield and a blue led panel plus cfl's or a mh would work fine. Depending on how you train the plants in flowering, you'll be able to fit 4 to 8 plants in your 4x4 flowering space. From 4 very bushy plants in 5 gallon buckets that you've...

Do you have the input hose pulling air from outside the room? If not, that will take care of most of the problem although many two hose systems draw in some room air via the grills.

How deep did u plant the seed? U want it about 1/2 inch below the surface. If u planted too deep, you can CAREFULLY remove some dirt to expose the seed, it should have sprouted after 3 days.

duct muffler is the commercial name if u perform a web search, silencer is the same thing

That would be a thermostat, like what controls the heating in your home. You can buy them at home depot without the plug and you'd have to cut the plug off the fan and wire it directly. Or you can go online and find a plug-in thermostat.

The answer depends on how much you're dealing with vibration-caused humming and how much you're dealing with the sound of air movement. Hanging your fan from bungee cords or using rubber feet will handle vibration related noise. Using a duct muffler will help control the sound of moving...

A light trap is usually something as simple as a 90 degree turn in your exhaust or input ducting to make sure light can't get in or out of your grow space.