Switching from HPS to LED Week 4 Veg?

[PJ Diaz]

Oh no, they will have a very impressive canopy. You see much light getting through that canopy?

But, but.. 1k DE penetration..?..

 

[bigbuzznutz]

Those open reflectors are the problem man. You need to have 10-12 foot ceilings to run them. I also see a fan pointed directly at one of them? That is a big no no. DE bulbs do not like to be cooled. I also see an 8'' ac infinity fan hooked up to a carbon filter. Your likely only moving about 200-300cfm with that setup. AC infinity fans are no good for pulling air through filters. Look into Vortex VTX fans, 10 year warranty on those boys.

If you want to run DE bulbs in a tent, you need these hoods. Sunsystem is the only one that makes air cooled hoods for DE bulbs. The bulb is completely isolated from the air cooled portion of the hood so it is able to get up to the temps it needs to get to.

Amazon.com: Sun System HGC904904 AC/DE Double-Ended Air-Cooled Reflector Accommodates DE 1000 Watt HPS Lamps 8",White: Industrial & Scientific

Buy Sun System HGC904904 AC/DE Double-Ended Air-Cooled Reflector Accommodates DE 1000 Watt HPS Lamps 8", White: Growing Light Fixtures - Amazon.com ✓ FREE DELIVERY possible on eligible purchases

www.amazon.com

I have a 8'' VTX connected to a 10x39'' phat filter just to cool one light in a 5x5.

View attachment 4787582

Put the LEDs in and am currently sitting at 71/50. Added the risers and have some nice saucers in order. Sat the lights at 18” initially and 75% power. Plants seem to be much happier now. Checked the run off on some of the plants I had concerns with and the pH had gone up to 6.5. Flushed them with 5.8 and cal/mag @ 3.75ml/gal.
Thanks for all the help guys.

 

[JoeBlow5823]

View attachment 4787998View attachment 4787999
Put the LEDs in and am currently sitting at 71/50. Added the risers and have some nice saucers in order. Sat the lights at 18” initially and 75% power. Plants seem to be much happier now. Checked the run off on some of the plants I had concerns with and the pH had gone up to 6.5. Flushed them with 5.8 and cal/mag @ 3.75ml/gal.
Thanks for all the help guys.

With LED you want temps more like 80-83.

 

[JoeBlow5823]

But, but.. 1k DE penetration..?..

Even a .50 BMG can only penetrate so far.

 

[bigbuzznutz]

With LED you want temps more like 80-83.

Alrighty then. Back to the drawing board I suppose. Or to Home Depot for a space heater.‍

 

[JoeBlow5823]

Alrighty then. Back to the drawing board I suppose. Or to Home Depot for a space heater.‍

Just run one of the 1000w HPS for the heat?

 

[bigbuzznutz]

Even a .50 BMG can only penetrate so far.

Alrighty then. Back to the drawing board I suppose. Or to Home Depot for a space heater.‍

Just run one of the 1000w HPS for the heat?

Actually was thinking about putting two in there. One at the head and one at the tail to help with coverage. Although I think once the lights are at full height I’ll be ok. Not great, but ok. With two running at 750W I’d be running at about 80-82 I think.

 

[insomnia65]

No he is looking to improve on watts per square foot without getting to hot. He wants 1000w of HPS power out of led bulbs.



And yes, i run a philips bulb at 1100w in a 5x5 and the girls love it. This dude needs 4 of those led boards.

View attachment 4786813

What bulb is that mate, got a link?

 

[JoeBlow5823]

What bulb is that mate, got a link?

Its the only lamp actually rated to run 1150w. I love it.

Philips AGRO Plus Double-Ended High Pressure Sodium (HPS) Lamp, 1000W direct from Growers House

Philips high frequency 1000W AGRO Plus EL double ended bulb. Philips High Pressure Sodium (HPS) lamp with clear outer bulb, optimized growth light output, and maintenance. 2000K color temperature. 2100 umol/s. K12x30s cap base. A++ Energy efficiency rating. Energy consumption 1116 kWh. Growers...

growershouse.com

This is the hood.

AC/DE 8 Inch Double Ended DE Air-Cooled Reflector direct from Growers House

AC/DE is the first air cooled reflector for double ended 1000w lamps. The Sunlight Supply Air Cooled Double Ended (AC/DE) is designed so air doesn't flow over the lamp, but instead through a cavity between the reflector housing and reflective aluminum. Cools via convection for optimal lamp and...

growershouse.com

They can be found used on craigslist for under 100$

 

[bigbuzznutz]

Well this is what I ended up with. Still trying to find some more scratch to add some extra LEDs but the girls seem to be much, much happier now. Thank you all for the help and suggestions. Pretty sure I’m still kind of screwed height wise. Great first grow lesson.‍

 

[PSUAGRO.]

You should be fine with height imo...... That's what the nets are for

 

[JoeBlow5823]

Have you not topped them? Use the trellis to spread them out....

 

[bigbuzznutz]

Have you not topped them? Use the trellis to spread them out....

They were topped last week. Tops all look good. Plants have recovered from the heat/light stress and are growing. Turns out I was under watering them by half of what they were getting. Since I upped their water intake 4 days ago everything is taking back off.

 

[bigbuzznutz]

Wound up getting 4 LEDs in there about 3 weeks ago. Currently on Week 4, Day 1 of flower. Thanks for all of the suggestions in the thread. I used much of that advice and was able to get my girls healthy and happy.