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I'd go for something dimmable, 400w-600w, and make sure it's a reputable brand as the ballast needs to be good quality for the bulb to be used efficiently. Lumatek and Gavita are brands i have owned and am currently using the Lumatek. Zip.

You might have to try it to believe it, but try putting your oscillating fans on a timer at like 15min on, 45min off. Circulation fans are mainly needed to combat fungus etc. and to build up some strength, so you don't really need them on constantly. Plus they keep a lot of the heat in the grow...

:) Works on Mac too... I'm somewhere on the West Coast now lol. It's a bit annoying when it's open, and was bugging a bit after install, but a swift reboot solved that. The thing I've found (with the Mac version anyway) is that you need to tell it not to launch application on startup, and to...

Yeah some people use MH for last week or so, but it's debatable as to whether or not it makes a difference (Some say it's pointless, but who really knows..?). I personally have never done this... but I have used UV on one grow. You could do a bit of research and get a UV light (UV-B), that will...

well, quick update I guess: I have since trimmed one of the worst leaves along with others. New growth is doing well, and plant generally looks healthy. Still have one leaf like this on smaller plant, other plants seem perfectly healthy and are really growing! I guess that rules out Fungi or...

I have that same tool ("Heavy Duty Hole Cutter"), I bought it to cut fan holes... do not get it is all i can say. Took me about 20 mins to get through 9mm of MDF, and it's so messy and unstable to use by hand, I ended up having to buy a new panel and use my jigsaw. My Hand-held Drill didn't have...

Damn dude thats totes amazeballs! :D I wish I had all that space... u got a license? Room looks good to go! Get some CO2 in there, the girls will love it ;) Happy Growing :D Zip

To calculate Volume of you grow space: HxWxD. For example 10ft(h), 5ft(w), 10ft(d) 10x5=50... 50x10=500... 500 Cubic Feet :D If you must get a PC fan, get one with good 'Static Pressure', as well as CFM rating, though I'm not sure one or two would be enough for 400w unless you spend a lot of...

Well, I can already tell this will be a long reply so I apologize in advanced lol... here goes: -Plywood is better than Drywall/Plasterboard, but Drywall/Plasterboard insulate sounds and heat better. -Make sure you treat your plywood to protect it from moisture or any spillages/mistings (even...

I'm not sure what you're saying, do you intend on using the Dual Spec for vegging (in place of MH), and then use HPS for flower? My favorite brands are 'Sun Master' (MH, Dual Spec) and 'Osram' (HPS). As SSHZ said Digital Ballasts can run both MH and HPS so check one of those out, because you...

I can't vouch for LED's, but have been using HID for a while now... Bulbs: -600w HID bulbs are the most efficient in terms of the lumens they put out per watt of electricity. -MH are very good for vegging, but run hotter than HPS so make sure you won't be running into any heat issues. -You could...

No horseshit here mate... just facts: Britta filters don't remove a lot of the trace elements, mostly the chlorine. It's common knowledge that if you want full control, and extremely clean water you will need an RO machine. If you don't have particularly hard water, and are happy buying new...

I can't remember the exact numbers and technical terms lol, but britta filters only remove relatively 'large' dissolved solids with a small 1 stage filter which the water just drips through. RO Filters use the mains pressure to pump water through 3 stages (some better models have 4) of...

Oh, now i see... "Who so causeth the righteous to go astray in an evil way, he shall fall himself into his own pit..." lol sorry peeps im sooo stoned! :bigjoint:

If you're in the UK, there is a place called watercoolerhq, I'm not sure if i can paste in links so give that a google... Stay away from britta filter type shite... it's no good for what we need (I assume you have hard water). Check out their RO machines, there is like a mini 'portable' type...

Yes HID are by far the best. Only problems you may run into with HID is heat, especially with MH bulbs. I'm currently using HID's only, but in the past have used both depending on the stage i was in. If you got the money, get yourself a Blue Spectrum 250W CFL for the first week or so, then you...

wow, that souns like one of them good problems... :-D. Hope you got enough room to flower those babies! Best of luck bro! Zip

Jees, who is bmeat? n whats with all the hate? I guess I'll just answer the question... The mix is fine. Ideally you should not put only perlite in the bottom, this is what I've heard from many growers. Though I'm on my 1st personal grow, I have had many successful "team grows", and remember...

depending on size of grow space, the only ones that might come close are going to cost you about the same as typical fan as you may end up needing more than one (but hi-spec PC fans are far less noisy than cheap ruck competitors ect.). also, the best option in my opinion is to blow through a...

how stealthy does it need to be? If youre thinking about PC fans you should check out "Noctua", pretty impressive figures considering they're PC fans. Either way remember that you need a fan that is good at 'sucking' rather than blowing, so if PC fans are your preferred choice, don't blindly...