T5 Grow Lights vs T8 Shop Lights

Shop deals on ebay
Advertise with us
shop deals on amazon
This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
I wonder what kind of heat the 8 bulb will create in that tent compared to the 400w HID currently running?

I have zero problems with heat using the 400w MH.

I'll see what I get when I crank this 6 bulb up all the way and I can anticipate from there.
 
Every grow needs ventilation, even small little closets with only a little light in them.

I found that my 4 bulb T5 put out substantially less heat than the MH, but that is also a whole lot less watts.
 
This door usually stays open so I get plenty of air. It's a rare occasion when I have to close it. So, it is a secondary problem I can address later. I have 2 fans blowing air so I get pretty good circulation. I just want to be ready in case I have to close it.

Question... these bulbs say 2800K on them. Are those the veg bulbs?

Now, I need to test this to see if it's too much light for cloning. I am getting ready to do a clone transplant so I will have some cuttings that would, otherwise be mulch. I'll pop them in the same starter I used last time. Put them in the same domes and treat them the same as last time and I'll compare with the clones that I just did under the T12 florescent bulbs.
 
My bad. I looked again and they say 54w 6400k

Thanks
 
Nearly every post talks in terms of what our eye sees and we skip photosynthetic requirements.

www.inda-gro.com has best lighting tutorial available for growers.

Plain english, photon count right down to the micro-mole.

How much dry weight desired, here's the photon mole count, 95% useable light, 1/3 the power, 2/3 less heat.

Moreover, true high pressure aeroponics uses 1/50 nutrient compared to low pressure hydroponics, mistakenly referred to as low pressure aeroponics, a critter not in existence.

We take pride believing our ride is high tech, yet 10 years from now our wasteful energy indoor gardening methods will be unthinkable in a global warming world and today's war on drugs rhetoric is accurately calling us out on just that.

We can counter the war on drugs and Legislators codifying us out of a energy wasteful existence by becoming better stewards of the BTU, Photon, and mili-liter of nutrient because if we don't, they will.
 
JimB said:
Nearly every post talks in terms of what our eye sees and we skip photosynthetic requirements.

www.inda-gro.com has best lighting tutorial available for growers.

Plain english, photon count right down to the micro-mole.

How much dry weight desired, here's the photon mole count, 95% useable light, 1/3 the power, 2/3 less heat.

Moreover, true high pressure aeroponics uses 1/50 nutrient compared to low pressure hydroponics, mistakenly referred to as low pressure aeroponics, a critter not in existence.

We take pride believing our ride is high tech, yet 10 years from now our wasteful energy indoor gardening methods will be unthinkable in a global warming world and today's war on drugs rhetoric is accurately calling us out on just that.

We can counter the war on drugs and Legislators codifying us out of a energy wasteful existence by becoming better stewards of the BTU, Photon, and mili-liter of nutrient because if we don't, they will.
Click to expand...

Huh??
 
Hackerman said:
This thing, even with only 2 bulbs cooking, is creating more heat than I can deal with in this little closet.

I'll toss an exhaust fan in the cocktail, tomorrow and everything should be fine.
Click to expand...

For smaller areas being lit, I like to remote mount the ballasts outside the grow area, this will drop temps by 5-10 degrees.
 
This T5 has the ballast built in. I assume you mean with an HID? Or, do some T5's come with remote ballasts?

By the way, this light is working out perfectly for what I wanted it for. I wanted something that could go from cloning to mid-veg. After they vig in here for a while, they spend 1 month under HID before flowering.

I need to test this for cloning but the seedling came up perfectly under 2 of the bulbs. It was under 4 bulbs within a week and at 2 weeks old it is under the full 6 bulb T5.

Love this light. It's like having a dimmer for an HID.

Would have never bought it or ever thought of trying it if it wasn't for all of you and MP. Love it here.

:)
 
Hackerman said:
This T5 has the ballast built in. I assume you mean with an HID? Or, do some T5's come with remote ballasts?

By the way, this light is working out perfectly for what I wanted it for. I wanted something that could go from cloning to mid-veg. After they vig in here for a while, they spend 1 month under HID before flowering.

I need to test this for cloning but the seedling came up perfectly under 2 of the bulbs. It was under 4 bulbs within a week and at 2 weeks old it is under the full 6 bulb T5.

Love this light. It's like having a dimmer for an HID.

Would have never bought it or ever thought of trying it if it wasn't for all of you and MP. Love it here.

:)
Click to expand...
I have a habit of taking things apart and making them work for my situation, ballasts are always built in, I just cut all the wires and extend them to outside the rooms.
 
LMAO... love you, man. You are a true hacker at heart.
 
Hackerman said:
LMAO... love you, man. You are a true hacker at heart.
Click to expand...

I have the ability to reengineer things to work for me if need be, I'm going to be playing with my own Raspberry Pi unit to see if I can't set up a master controller to interact with my other various controllers and care a system, I wAnt the capability of monitoring and tweaking things from my own VPN.
 
Ability AND desire. You have them both.

Where were you when I was hacking XM? Can you program in C? just kidding.

A couple weeks ago, I hacked my coffee pot. The built-in grinder would grind for a totally annoying and way longer than needed 64 seconds. Seemed like forever first thing in the morning. Especially, with a hangover. LOL I pulled the PIC chip which is the main controller and dumped the code and modified the code to change the timing to a cool 15 seconds. Re-write the code.... a little soldering and.... Bingo! I love my coffee pot. JUST the way I like it, now. LOL I was never very good with my hands but electronics just seemed to come natural to me.

Hack on, brother. ;)
 
betsylee11 said:
led tube is ok, please look at the pictures.
Click to expand...

Marijuana is not lettuce. Greens like lettuce will grow with very little light. Marijuana is a high energy plant. What works for lettuce will not work for marijuana.
 
I’m a new grower, I’m growing with t8. It’s not going too bad... seems slower than what’s typical from what I’ve read
 
Hey Tiff Welcome to MP -- I started to say something earlier but I grow under LEDs so I don't know what to say !-- It's been a quite day but there are those who know about such lights who will be around later to give U all sorts of advice !
MP is like a living library of grow info ! --
Again Welcome to MP !
 
T8 while the plants are still real short isn't bad at all; it's as they grow taller that you will see yellowing lower leaves and want some better light penetration.
Since this is what you've got at the moment, make sure you run a good daylight bulb and keep an eye on the distance between bulb and canopy, to balance bright light vs too much heat.
Edit: I'm a moron and replied to a 5 year old question. But yes we just found an early adopter of raspberry pi. I wonder where he is now, and how the controller build worked out!
 
Last edited:
You must log in or register to reply here.

Similar threads

jagwire2010
Hello! New to the Forum
25 26 27
Replies
535
Views
14K
jagwire2010
jagwire2010
Oscarzuma
OZ's First Indoor Grow
2
Replies
21
Views
557
Oscarzuma
Oscarzuma
Ganjier
Use your imagination....
2
Replies
22
Views
2K
Ganjier
Ganjier
Zziltched1
Skunk, Subgal…
2 3
Replies
43
Views
2K
Zziltched1
Zziltched1
T_Dub
Flower Bars / Kind x80 Flower Bar - Worthwhile Upgrade?
Replies
5
Views
1K
johnnyrr435
johnnyrr435

Latest posts

Back
Top