Quote Originally Posted by potwarrior
i have a couple of q's

1. i use a 400watt cmh and was wondering, dutch pimp, if your buds are airy?

im on my 2nd tent grow (og kush in DWC) w/ the cmh but my 1st grow, white widow in soil (fox farm) the buds were really airy.

2. i read some where that its not good to use mylar because it absords (or something) some of the infrared rays or something and cmh users should stick w/ white, is that true?

3. how do i prevent the burns i get on my girls? it looks like yours, dutch, i have lots of crispy, burnt leaves too?

4. i got the "enclosed" cmh bulb is it good or should i get an "open fixture" bulb? what kind of glass do i use, mine only says tempered.

5. i also read that its a good idea to throw in a uv bulb in the grow to, is this also true and if so which one uva or uvb?


thank you
1. No ...I have no airy bud problem. It's either a strain problem or a growing method problem. I do soil only.

2. Mylar reflects heat. Flat white paint is better.

3. It's not usual for bottom WW leaves to turn yellow & die off. I keep the light about 15 inches above the canopy. You have to watch for burning on the top canopy; no matter what bulb you use. To far away is better than too close.

4. All Philips CMH bulbs are rated for 'open fixtures'. I run an open fixture. Is your bulb a Philips Retro-White CMH bulb?

5. Philips CMH bulbs have all the UV you need. Probably; too much UV if it's too close to the plant tops.