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I lost the test vial it came with and I don't know how much water to mix with the 3-5 drops of PH test indicator. It says to fill test vial about half way, than add 3-5 drops of PH test indicator. Then mix. I need to know how many tablespoons or something that is in half a vial

How hot do you think this would warm up my grow room. It's around 70F when lights are off.

What makes a 300W LED from China so bad compared to an expensive LED. I'm asking because I'm looking at this: http://www.amazon.com/gp/aw/d/B00V80UQR8/ref=psd_mlt_nbc_B00WHF830K_prb

Also raising the heat will lower the humidity

1.buy a dehumidifier 2. Damprid 3. More fans. 3. Exhaust fan.(u can make one with just a normal little fan and some cheap ducting for about $25 all together)

How hot are the king TM lights ?

What lowest humidty

Well then just what's the difference between a cheap $150 300W LED, and a expensive $300-400 300W LED?

What's the difference between a cheap LED from China and a expensive LED like diamond brand?

What about veg? Only 6500K blue and white?

Good replies, but can someone answer the other questions I had?

Did that do well? I was told you need at least 3000 lumens/ft2 minimum or 6000 for optimal

Thinking about buying this one, and mabey adding some extra 2700k CFLs in during flowering. Or mabey getting the 600W one. This YouTube Caligreen used it and got good results. Anything bad about this one? http://www.amazon.com/gp/aw/d/B00V80UQR8/ref=psd_mlt_nbc_B00V64PMFW_rb

I'm looking to upgrade to LEDs from CFLs. I want a LED that I can use for Veg and Flowering and for a good price. I'm thinking around 300 Watts. I want just one lights also I don't want to have to buy one light for veg then another for flowering. Any recommendations for a LED? Also is it better...

Can anyone recommend a affordable effiecent humidifier that would work well for a small grow room (4ftx2ft)

Like 4x2. I think I just have a crappy humidifier, I've read alot of review about how it's insufficient

Like 4x2. I think I just have a crappy humidifier, I've read alot of review about how it's insufficient

I tried that ,if it runs with everything on without the ventilation it reaches over 80F and humidity raises only a few percent,. I think it's doing that because when the heat rises humidity lowers. Mabey I need a better humidfier

I'm trying to get my environment perfect before I start my grow but I have a problem with the humidity. My humidity with the lights on is about 40% at 75F. This isn't too low but I want to able to raise it 10-15%. I have a Vic's humidifier running the whole time but I also have ventilation...