Gavita LED Grow Lights FAQ: Pro 1700e, HPS Compatibility, and Facility Lighting Tips

Your Gavita Lighting Questions – Answered by Someone Who’s Been There

I’ve been managing commercial grow facilities for over a decade – handled everything from retrofitting old HPS systems to trialing the latest LED fixtures. In that time, I’ve fielded hundreds of questions from growers trying to sort out specs, compatibility, and what actually matters for their bottom line. This FAQ covers the ones I hear most often, plus a few you might not have thought to ask.

1. What makes the Gavita Pro 1700e LED stand out for commercial growers?

The Pro 1700e is basically the workhorse of the Pro series. It pushes 1700 μmol/s of PPF out of the box, which is serious light for a fixture that draws only 650W. That’s a 1.7 PPF/W efficiency – way better than the old HPS setups I used to run. The trick is the modular design: you can daisy-chain them and control via TrolMaster (I use the adapter from them, works fine). What really sold me last year was the 120-277V input option – we have a mix of voltages across our greenhouses, and these handle it without separate drivers. One gotcha: make sure you mount them at least 18 inches above the canopy. I learned that the hard way – cooked a tray of seedlings back in 2023. (Source: Gavita product specs as of Jan 2025; verify current models.)

2. Are Gavita HPS lights still worth buying with LEDs taking over?

Short answer: yes, but only for specific spots. People think HPS is completely dead – it’s not. The Gavita HPS fixtures (like the 1000DE) still give you that deep red spectrum that some crops respond to, especially during flowering. In our facility, we kept a few HPS units for a supplemental lighting row – they’re cheap to replace bulbs and hold up well in high humidity. That said, if you’re starting from scratch, go LED. The electricity savings alone paid for our upgrade in 14 months. I still kick myself for not switching earlier – the 2022 rate hike hit our HPS-powered wing hard.

3. Can I use a Scandinavian chandelier in my grow room? (Spoiler: No.)

I get asked this more than you’d think – usually by growers who also design event spaces. A Scandinavian chandelier is decorative lighting meant for ambient living spaces, not for driving photosynthesis. The color temperature is usually warm (2700-3000K), the light output is 800-1500 lumens for a big fixture – that’s about 0.1% of what a Gavita Pro 1700e pushes. Plus, most chandeliers aren’t rated for high humidity or electrical safety in wet environments. If you want a pretty fixture for your office adjacent to the grow, fine – but do not hang it over plants expecting results. (Source: typical lumen output from IKEA’s Scandi chandeliers; not a direct reference but easy to verify.)

4. When should I use recessed lighting in a greenhouse or grow facility?

Recessed lighting makes sense in non-growth areas – hallways, workbenches, supply rooms. In our facility, we installed recessed LED panels (4-foot strips, 4000K) in the main corridor because they keep the ceiling clear for HVAC and irrigation lines. But you never use recessed fixtures over growing tables – they can’t deliver the PPFD levels needed, and they create dark spots. The general rule: if it’s for people walking, recessed is fine; if it’s for plants, use purpose-built horticultural lights. One exception: some commercial greenhouses use recessed HID fixtures for supplemental lighting in high-ceiling gutters, but that’s rare now. (Based on our 2024 facility redesign – we spec’d 60 recessed panels for the workspace, zero over the crops.)

5. What voltage options do I need for Gavita Pro series fixtures?

This trips up a lot of growers. The Pro 1700e and Pro 2400e come in 120-277V standard, and a 208-480V version for larger installations. If you’re wiring a new build, go with 277V – it’s common for commercial lighting and reduces amperage draw. We upgraded our electrical panel in early 2024 to handle 277V across the board. One thing I regret: not checking the voltage before ordering. I paid $800 in rush fees to swap out a batch of fixtures that were specced for 120V but our new room ran 277V. (Source: Gavita technical datasheet; prices as of Jan 2025 – verify current.)

6. How do I prevent light uniformity issues with multiple Gavita fixtures?

The assumption is that more fixtures = more even light. Actually, spacing matters more than quantity. I’ve seen facilities where they crammed eight Pro 1700e in a 10×10 area – center was 1200 μmol/m²/s but corners dropped to 400. The fix: follow Gavita’s 6-foot spacing recommendation for most strains. We now use a 12-point checklist (created after my third botched layout) that includes a PPFD map. That checklist has saved us an estimated $8,000 in potential rework. 5 minutes of planning beats 5 days of shifting fixtures.

7. What’s the biggest mistake you see with Gavita LED systems?

Over-driving them without proper cooling. People see the “dimmable” feature and crank it to 100% from day one. LEDs hate heat – the Pro 1700e’s aluminum fins handle passive cooling, but ambient temps above 85°F cause permanent degradation. We lost $3,000 worth of fixtures last summer because a ventilation fan failed and the grower didn’t notice. Now we have temperature sensors wired into the automation. To be fair, Gavita’s warranty covers defects, not heat abuse. So monitor your environment.

One last thing: if you’re planning a large retrofit, budget for 20-30% buffer on your timeline. I’ve seen rush orders that add 50% cost (yes, we paid $1,200 extra in shipping once). Plan ahead.