HLG Greenhouse Pro Series – High Efficiency Supplemental Greenhouse LED Lighting


Price:
Sale price$1,549.00

Lead Time: Receive this item in 4–6 weeks

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Free Shipping Over $49

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Discreet Packaging

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Have a Question?
716-217-0353

Description

The HLG Greenhouse Pro Series is designed for greenhouse growers who require efficient supplemental lighting or extended photoperiod support. Built for both standard and industrial electrical environments, this series offers full compatibility with 120V, 240V, 277V, and 277–500VAC high-voltage systems.

Its slim linear design minimizes crop shadowing while integrated reflectors improve photon delivery and reduce glare. With multiple spectrum options and power levels, the Greenhouse Pro Series provides consistent, high-output performance for commercial facilities needing reliable, energy-efficient lighting across large cultivation areas.

Features and Benefits

Compatible with standard RJ11 dimming controllers
Daisy-chain capable on the AC side for reduced installation cost
Slim linear housing minimizes shading on greenhouse crops
Integrated reflectors improve photon delivery and reduce glare
Full spectrum white and deep red output for healthy plant growth
Available in multiple spectrum classes: R4, R6, and R7 high-efficiency
High PPF efficacy up to 3.4 µmol/J depending on spectrum selected
Passive-cooled design provides silent and reliable operation
Certified to UL 8800, CSA, and DLC standards
Backed by a 5-year warranty

Spectrum Options

Spectrum Class Description PPF Efficacy
Full Spectrum R4 Balanced full spectrum with deep red 2.85 µmol/J
Full Spectrum R6 Higher efficiency full spectrum 3.1 µmol/J
High Efficiency R7 Maximum efficiency, deep-red optimized 3.4 µmol/J

Power & Model Specifications

Greenhouse Pro 650

Specification Details
PPF Output Up to 2200 µmol
Power 650 Watts
Voltage Range 120–277 VAC or 277–500 VAC
AC Plug Options 5-15, 5-20, 6-15, 6-20, L7-15, L7-20, pigtails
Dimming 0–10V via standard RJ11 cable
Dimensions 59" × 6.75" × 4.75"
Weight 14.6 lbs

Greenhouse Pro 350

Specification Details
PPF Output Up to 1100 µmol
Power 350 Watts
Voltage Range 120–277 VAC or 277–500 VAC
AC Plug Options 5-15, 5-20, 6-15, 6-20, L7-15, L7-20, pigtails
Dimming 0–10V via standard RJ11 cable
Dimensions 31.25" × 6.75" × 4.75"
Weight 10 lbs

What’s Included

• HLG Greenhouse Pro Series fixture (selected model and spectrum)
• Integrated reflectors
• Remote-mountable driver (model dependent)
• AC power cord option selected
• RJ11 dimming interface

Your Happy Hydro Shipping Experience

We ship fast from Buffalo, NY. Most orders land at your door in 3-5 business days. Free standard shipping on orders $49+, plain-box packaging, and real humans ready to help if anything goes sideways.

Free shipping on orders over $49
Plain-box discreet packaging
Serving growers since 2006
When you order from Happy Hydro

Fast & Free on Orders $49+

Free standard shipping to the lower 48. Most orders ship same or next business day from our Buffalo, NY warehouse via UPS Ground or USPS Ground Advantage. Expedited options available at checkout.
* Soils may incur added fees for Western US delivery
* Some products ship direct from the vendor's warehouse to keep prices lower and get your order there faster

World-Class Customer Care

Our grower support team is here 10 am-4 pm EST, Monday-Friday. Call 716-217-0353 or email help@happyhydro.com.

Discreet & Secure Packaging

Every order ships in a plain brown box with no branding or logos. Your purchase stays 100% private. We can also ship to your local UPS Store on request.

Shipping details at a glance
Delivery time
3-5 business days
Default carrier
UPS Ground or USPS
Signature required
Orders over $500 only
Free shipping threshold
$49+ to the lower 48
International
Canada only Email help@happyhydro.com your address & a screenshot of your cart for a quote
Returns
30 days on most orders Exceptions apply — orders over $400, multi-box shipments, and some vendor items may incur return shipping charges. Full policy
Frequently asked questions
Shipping
Check the order confirmation sent to your email or phone after checkout — it includes a tracking link. If you use the Shop App, you can track your order there too.
Most orders arrive in 3-5 business days. Expedited options (2-day, overnight) are available at checkout if you need it sooner.
Signature is only required on orders over $500. For added privacy, we can ship to your local UPS Store so you pick it up on your own schedule — just ask.
We default to UPS Ground or USPS Ground Advantage. Select an expedited option at checkout and we'll use the appropriate carrier for that service.
  • P.O. boxes: Yes, for small and lightweight items.
  • International: Canada only. Email help@happyhydro.com your address and a screenshot of your cart for a shipping quote.
  • APO/FPO: Not currently available.
For Canadian orders, import duties and taxes are the buyer's responsibility. You'll complete payment using your tracking number at UPS.com when your package arrives.
Title and risk of loss pass to you once we hand off to the carrier, but that doesn't mean we leave you hanging. Email help@happyhydro.com and we'll work overtime to track it down and make it right.
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We accept credit/debit cards, PayPal, Coinbase, and Happy Hydro gift cards. Your card is charged immediately at checkout.
Double-check your billing address and card number. For larger purchases, your bank may have flagged it — a quick call to authorize the transaction usually sorts it out.
Promotions
Enter your code in the "Promo code" box at checkout and click Apply. One code per order, but you can combine a gift card with a promo code if you have both.
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Returns & Cancellations
Email help@happyhydro.com within 30 days of delivery and we'll get you a refund or replacement, your choice. Items must be in original packaging with all parts in resalable condition. Multi-light orders, grow tents, orders over $500, and multi-box shipments may incur return shipping charges. AK, HI, and international buyers are responsible for return and warranty shipping. Some vendor-specific policies may apply — check the product page for details.
Refunds are processed through Shopify within 10 business days. Most customers see the credit back in about 5 days.
Reply to your order confirmation email or email help@happyhydro.com as soon as possible. Canceled orders may incur a processing fee depending on your payment method:
  • Credit/debit card: 2.9%
  • PayPal or Venmo: 3.5%
  • International PayPal: 4.0%
  • American Express: 4.1%
  • Shop Pay Installments / PayTomorrow: 6.5%
Support & Policies
Call or chat with our grower support team at 716-217-0353, Monday-Friday 10 am-4 pm EST. You can also email help@happyhydro.com any time and we'll get back to you quickly.
Your privacy matters to us. Read our full policy at happyhydro.com/pages/privacy-policy.
Why Buy From Happy Hydro

Why Buy From Happy Hydro

Happy Hydro began as a pipe dream in a garage and has grown into something built almost entirely on word of mouth and repeat customers. Rather than focusing on raising margins and obsessing over profits, we've always believed that the right combination of competitive prices, superior products, and world-class customer service speaks for itself. Our philosophy will never change: when you're happy, we're happy.

What you can expect from Happy Hydro

Real People, Real Growers

Our grower support team isn't a call center. They know the products because they're passionate about growing. Reach us Monday-Friday, 10 am-4 pm EST at 716-217-0353 or help@happyhydro.com, before you order or after.

Hand-Picked by Growers, for Growers

Every brand we carry was chosen by our founders because it performs. We only stock premium brands we believe in, and every item is inspected before it leaves our warehouse.

Fair Prices and Free Shipping

We work hard to keep our prices as low as manufacturers allow, and we include free shipping on orders over $49 so there are no surprises at checkout. Find a lower price anywhere and we'll match it.

Authorized for Every Brand We Carry

We're an authorized dealer for every manufacturer on our site. That means you get the full manufacturer's warranty on every purchase. No grey market, no expired stock.

30-Day Returns on Most Orders

Hard to commit to a product you haven't tried. Return most items within 30 days in original condition and we'll take care of it. Read the full policy.

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Every transaction is SSL encrypted. We don't store payment information and we will never sell your data to anyone, ever.

Volume and Commercial Pricing

If you're a commercial grower or putting together a large order, reach out before you buy. We have pricing available that we can't advertise publicly. Call 716-217-0353 or email help@happyhydro.com and we'll take care of you.

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