Need ideas for lighting vegging a 4 x 4 tent

Hotwired

Well-Known Member
I need a new idea for vegging my 4 x 4 tent. I've tried cfl, hps and metal halide and I'm not happy with any of the results I'm getting.

400 watts of cfl kept them short, but too thin stemmed.

450 watts of hps (a 600 turned down to 75% on digital ballast) did better with thicker stems.

And last a 600 watt Hortilux Blue metal halide also turned down to 450 watts with my ballast. Plants grew very very slow and lanky. Couldn't make it bushy at all due the the slow process. 4 full weeks of veg gave me 4 thin branches.

I believe the Hortilux Blue couldn't operate at its best @ 450 watts. Plants seemed to stretch for the light even tho they were only 16 inches away. Running @ 600 was way too hot of an environment so I think I wasted time running them @ 450.

My style of growing is to have only a few branches that grow fat buds instead of many branches and smaller buds. I need coverage for the whole 4 x 4 area and 600 watts seems to do the trick all the time. BUT, it's too hot so I need lower watts.

The HLG 550 turned down to 450 might do the trick but $1k bucks it's a lot. DIY cobs or QB's are out of the question. I want to be safe, not sorry.

A 5 inch rooted clone should not be giving me 4 small branches after 4 weeks of veg. Sometimes they sit there for the first 2 weeks and look like they hardly grew. Using soilless mix with Dyno Gro Foliar pro. 200 to 300 ppm after the first week.

Of course user error could be a part here. One of the problems I thought I had was planting the clones too early without enough roots. But I planted clones fully covering the rapid rooter and hanging down and planted clones with maybe 6 to 8 good roots on it. Both come out the same way, slow as shit.

I have 2 fans in the room and temps stay around 80 during lights on with RH at 50%. Plants are always healthy and love the food. I run perpetual so 4 weeks veg is max.

Is it the light? Is it me? Any suggestions on lighting?
 

Hotwired

Well-Known Member
Were your lights in air cooled hoods?
Yes.

I think the problem is running the 600 watt Blue @ 450 watts. I did a little experiment and turned it up to full strength. I saw results overnight with the leaves pointing upwards in the morning wanting more of it.

The problem now is the heat @ 600. There has got to be a better way to veg a 4 x 4 tent with less than 600 watts and still do a great job. I have a 600 watt hps running @ 450 watts in another tent it it seems to be doing fine. Something wrong with running the Blue @ 450. Still working on this but I think I nailed the light problem.

The slow growth is still another thing I need to work on. 4 weeks of veg should give me a decent plant from a 6 inch clone. I'll know in a few weeks if the hps @ 450 solves the problem. Otherwise I have to look into something else.

@eLite_gRowr............your plants look great but you are in hydro and they should look like that. What system are you using?
 

hotrodharley

Well-Known Member
Blue or metal halide are far less effective than HPS. Meaning amount of usable light emitted per watt used is much less than HPS. I have started using HPS for my entire grow with the exception of first starts under T5HO. Using the right bulbs and good bulbs in a large T5 array is very effective for stout and bushy plants. Runs cooler too.
 

Hotwired

Well-Known Member
Seems like it. Those bulbs were damn expensive tho. Waste running them @ 450. Going to have to put them on the shelf for a rainy day.
 

Rocket Soul

Well-Known Member
If youre youre allready on to hlg check out their 120/132 boards. No need for heatsink, just power them. 4-5 should be enough and their only about 40$ each. Speak to hlg and they will find the right driver aoultion for you
 

L30nPh3lps

Well-Known Member
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Yea u already have ur answer in looking at HLG lights, i veg in a 2x2 with just a HLG 65 and flower in a 4x4 with a HLG 600
 
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