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How big is your grow space for that 250watt, and how much noticeable heat does it output? I am thinking about buying a 250watt for my first HID grow, then move up to 400watt and maybe 600watt depending on how much heat they output. (My grow space is to be 2x2 or a 3x3 tent whenever I found one...

Here is what I know, I pulled this out of http://forum.grasscity.com/lighting/321592-thinking-about-using-150w-hps-dont-bother-heres-why.html Watt for watt, anything under 250watts power consumption you should use CFL, but anything over 250-400watt HID lights is needed. I am am in simular...

Know what, I think I should go HPS. I want to use something people have had success with (mainly since CMH bulbs need magnetic ballast and I don't want that noise/heat in my room). Right now since my grow room is my room, I am looking for something not going to pump out too much heat. So I am...

Plants been vegging for 5 weeks in DWC tub running two 42w CFL lights. I think soon my plant will be ready to flower, so right now since this is my first grow I need to find out what light I want to get so I can flower my plants correctly, on a budget. I been searching ceramic metal halide...

Update: Removed the worst looking leaves yesterday. How the plant looked before I cut the leaves off Here is what she looks like now, leaves are still showing up brown spots, but it doesn't look like it is progressing like earlier. I am not sure if the plant recovered or still suffering?

Yah you might be right I never thought of a lockout. Before I flushed the res last week, I usually had the ph higher at 6.0-6.3, now the ph was lower (5.5) and all of a sudden I am seeing spots on my plant... Update I PHed to 6.0 and upped the nutes to 100% (from 50%) this morning. I checked...

40/80 is for flowering. G-M-B (Grow-Micro-Bloom) 0-5-10 - For Vegetative cycle (18/6) 0-8-16 - For Flowering cycle (12/12) I am using 12.5ml Flora Micro + 25ml Flora Bloom for 5 gallon of water (50% strength) I am kind of scared to add full strength nutes just yet since I have a 1 week old...

So far my first plant is about a month old, and all went well until my first res flush. Last week. After 3 weeks I changed the res, and I put exactly the same nutes I used last time after I PH-ed the water to 5.7, and (following Lucas formula) 12.5ML Micro + 25ML of bloom to 5 gallon RO water...

I read a lot of benefits to using CMH bulbs for flowering over HPS, the main one that stands out for me is that its CMH at watt for watt produces less heat then HPS. I am interested on getting a 400W CMH bulb since that is what I read is the highest watt available. I was interested on getting...

I might have to, I can't seen to find any place locally selling 42 watt 5000k cfls.

I have 2 seedlings little over a week old (~2in tall). I am ready to move them in my DWC tub, but right now they been only growing in rockwool cubes in water. Both plants have two 15watt CFL on a Y splitter, but I want to upgrade the CFL to two 42watt on a Y splitter. What I am worried about...