Looking for the best led bulbs i can get..

s0p3rsa1yan

s0p3rsa1yan

Active Member
I bought in the past a few cxa3070.. Didn't got the chance to use them beside of only one of them.
Is there still a driver i can get for them?
Its messy using a fan a driver And a hub(for the fan).
Im not much of a DIY, so i rather buy a led bulbs.
Is there good bulbs that cant replace the new COBs people in here using?
BTW the electricity in my country is 220V.
 
Last edited:
BobCajun

BobCajun

Well-Known Member
You could by a bunch of Osram 60w equivalent 2700k LED bulbs. Their efficiency is in the 90 lumens per watt range, actually 94 if you work it out, as much as many cobs run at normal current. The drawback is that it would take a lot of them to cover a space, and you'd have to get a bunch of lamp sockets unless you could rig them up some other way. You'd need probably 5 per square foot up to maybe 9. To replace a single CXA, which would probably be run at about 50w, you'd only need 6. It would probably cost you around $20 for them. Now if you compare that to spending maybe $40 for a cob and more for a driver, you'd be saving lots of money. You also don't have to order them in, just go to a local store and buy them off the shelf. Here's what I mean, but you have to get a 4 or 6 pack to get a price around $3-4 each. Nice bulbs. I use them myself for cuttings. For actual growing I think you'd need to make some kind of reflector, because the light is bulb shaped and comes out in all directions. Something like a cone of aluminum foil wrapped around the bulb just behind the light emitting part.

 
Last edited:
BOBBY_G

BOBBY_G

Well-Known Member
those are fine and i use them, you gotta pop the reflectors off and you have nice forward facing SMD chips

theres a whole thread about the A19 bulbs:
https://www.rollitup.org/t/got-my-ge-brightstiks.896869/

cliffs notes:

-these are more efficient than T5s but not as efficient as cobs
- the 14-16W "100W replacements" are more efficient than the 6-11W 60-75W replacements. across the board all the smaller bulbs are just under 100 lm/W and all the 14-16W bulbs are 100-115 lm/W. its so consistent that i suspect that the mfrs are pegging right to an energy star standard for each size
-the $5-$8 non-dimmable one are rated for 8-10 years, they run em pretty hot (relative to our typ. usage)
-speaking of hot the base is the heatsink and all of these get hot as balls, too hot to touch
-seems like everyone sells 2700K warm and 5000K cool/dayllight
 
BobCajun

BobCajun

Well-Known Member
BOBBY_G said:
those are fine and i use them, you gotta pop the reflectors off and you have nice forward facing SMD chips

theres a whole thread about the A19 bulbs:
https://www.rollitup.org/t/got-my-ge-brightstiks.896869/

cliffs notes:

-these are more efficient than T5s but not as efficient as cobs
- the 14-16W "100W replacements" are more efficient than the 6-11W 60-75W replacements. across the board all the smaller bulbs are just under 100 lm/W and all the 14-16W bulbs are 100-115 lm/W. its so consistent that i suspect that the mfrs are pegging right to an energy star standard for each size
-the $5-$8 non-dimmable one are rated for 8-10 years, they run em pretty hot (relative to our typ. usage)
-speaking of hot the base is the heatsink and all of these get hot as balls, too hot to touch
-seems like everyone sells 2700K warm and 5000K cool/dayllight
Click to expand...
Yeah they do get hot. I would mount them through holes in a sheet of aluminum, so that the base is above the aluminum in a chamber which has air drawn through it with a fan. It would take some hole sawing with one of those round hole cutting drill bits.
 
You must log in or register to reply here.
Top