I've got three 315's, each one in it's own 3x3 tent. They're all open rated, so the only cooling needed is a 6" clip on fan aimed at the back of the reflector.
I grow for my own needs, and don't keep track of weight, but I can tell you that my yields have increased substantially since switching from LED to LEC.
I have been considering switching my hps/mh bulbs for LEDs (California light works) but you and @MichiganMedGrower have me reconsidering switching to LEC. BEAUTIFUL grow. Well done.
Damn! I wanted to see what you could do with the California lightworks rig.
LED's are good, but LEC is superior, in my experience. Case in point, the same cut of Grape Ape under LED, and LEC.
I've got 6" inline fans on each of the tents for exhaust, but the original question was if I was using cooled hoods, or not, you silly goose.
Hey I was high and was alerted right to that post. It was an honest question. Lol
The Grape Ape was under an Area 51 LED light. So even under a high quality LED, the LEC easily out classed it.Oh and @Bad Karma thanks for posting the comparison pics. Please remind us what led was used?
And I think the Hortilux Blue is also helping bring out colors. Now that I have a more equal spectrum bouncing all around you can almost see which ones turn purple.
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You may be right to call me "silly"
Loudly loling!
But if I run 4 inline in a 4x8 that would be too much heat right? Should I just go 2 630s with cooled hood?
Two 315's and a 630 will be the same thing except you will have less light sources so less flexibility to adjust the lights and not as even coverage. I just can't see how two 630's would be a better fit or less heat ...........Get the 315's.....
Agreed any the coverage. I'm worried about the heat though... Only the 630s come hood cooled. 4 315s in a tent.... How to control the heat?Two 315's and a 630 will be the same thing except you will have less light sources so less flexibility to adjust the lights and not as even coverage. I just can't see how two 630's would be a better fit or less heat ...........Get the 315's.....
is a fresh air intake possible? run it at nite if need be and draw in cool outdoor air on a thermostat shut off.
I run at night. But that would be like running 2 600hps open hooded in a tent. Does anyone do that? Lol
I haven't used a 630, but it's my understanding that they put off more heat than two 315's would together. 315's run surprisingly cool, so four of them in an 8x4 should be fine, as long as your ventilation is good, and you've got some fans blowing on them.
i ran a 600 open in a 3x4 using outside air. it can be -10F to 50F depending on time of year around here. that would cool just about anything.
Did you see sun system now makes a diamond series? Supposedly for low ceiling use. Basically, just looks like they horizontally mounted the bulb. Would this be better for a tent?
I would recommend using the remote reflector/ballast models if your looking to keep the heat down. Also, for optimum effect, LEC bulbs should be mounted vertically. Which is another reason I prefer multiple 315's to one 630.
5 years with 315w CDM and a couple of years with 400w Retro Whites.
There's an air cooled hood you can buy I think it's a hydro farm brand I will look it up for you in a bit. Growers house sells it and they also sell the prism ballast and Phillips bulbs as a kit. If I was buying a 315 today this is what I would look into. You would then have a remote ballast and AC hood I can't imagine how much better the 315 would run temp wise if this was one was looking for.