It was the first week of February 2024—cold, gray, and the perfect time to get our indoor herb operation going. My boss, who usually handles the commercial side, was out sick, and I was left holding the bag on a $15,000 buildout for a local restaurant chain that wanted to start growing its own microgreens and basil in the back of the house.
I’d been handling procurement for about four years at that point, but mostly for office spaces and retail fit-outs. Growing lights? Not my jam. But I thought, “Hey, a light is a light. How different can it be?”
Famous last words, right?
The Setup: Choosing the Wrong Tool for the Job
The client had a tight deadline, and I was under pressure to get the order in. I logged onto Costco’s website—figured they have a good return policy, so I can’t screw up too bad. I saw the Feit Electric PAR38 LED bulbs in a 4-pack for a decent price. They were bright, 1500 lumens each, and they were on sale.
I ordered 40 of them. 10 four-packs. It was a $1,600 order right there, plus some wiring and sockets.
I also ordered a few of the Feit Electric LED strip lights for a test shelf setup, grabbing some connectors for them, too. In my head, it was all the same: just light. I didn’t check the spectrum. I didn’t check the PPFD (Photosynthetic Photon Flux Density). I just saw lumens and price.
Honestly, I'm not sure why I thought lumens would translate directly. My best guess is that I was in a panic mode, defaulting to what felt safe—a known brand, a known retailer, a known price point. I just didn't know what I didn't know.
The Turning Point: Watching $1,600 Wilt
The bulbs arrived. We mounted them. The restaurant opening was 10 days out. I had a crew of two electricians working overtime to get the racks wired up. We were on schedule. It felt great.
Then, day three. The basil starts looking… tired. They were leggy, stretching toward the light but not getting bushy. The microgreens were pale, almost yellow. I texted my boss a photo.
His reply: “What’s the light spectrum you ordered?”
I stared at the screen. I had bought standard Feit Electric PAR38 LED flood lights. The ones for security and outdoor use. The ones with a broad, cool white output at about 5000K. They were great for lighting up a backyard, but terrible for plants. They had almost no red spectrum (600-700nm), which you absolutely need for flowering and for most green growth.
I had essentially bought very bright, very expensive room lights.
The Fallout: Rushing a Fix
This is where the “time certainty” lesson kicked in. I had to fix this now. The alternative was missing a $15,000 event launch for the restaurant.
I went back to Costco and returned 36 of the 40 bulbs (I had already burned out 4 trying to test them under a ballast that wasn't right—another $100 mistake). I then went online, found the Feit Electric PAR38 LED grow light specifically. It’s a different SKU. It has a full spectrum output (usually around 3000K, with a boost in the red/orange range).
Because I needed them fast, I paid a $400 rush shipping fee. Standard 5-day shipping wasn't an option. It had to be overnight.
Plus, I realized my LED strip light connectors were the wrong gauge for the heavy-duty power supply I had bought. That was a separate $200 mistake in re-wiring.
The total tab so far:
- Original wrong bulbs: $1,600
- Return fees (shipping back the ones I couldn't return to store): $50
- Burnout test damage: $100
- Rush shipping on correct grow lights: $400
- Wrong connectors and re-wire parts: $200
- Labour for electricians to swap out 36 fixtures: $850
Total: $3,200 wasted.
The Lesson: Grow Lights Are Not Regular Lights
When you look at Feit Electric PAR38 LED grow light reviews, you see people talking about how it saved their tomato plants or how their lettuce exploded. But you need to understand why. It’s not because the bulb is “brighter.” It’s because the spectrum is correct.
Most buyers focus on watts and lumens and completely miss the color temperature and spectrum chart. This is the classic outsider blindspot.
If you’re looking for a powerful LED flood light for your driveway, get the standard Feit PAR38. It’s great. I still buy them for my garage. But if you’re asking “what is the most powerful LED flood light” for growing, you’re asking the wrong question. You should be asking “what is the most effective spectrum for my plants?”
My experience is based on about 200 mid-range commercial orders. If you’re just growing a single houseplant, your experience will differ. You can probably get away with a standard bulb. But if you’re building a commercial rack, or if you’re a contractor doing a job for a client, don’t shortcut the specs.
A Quick Guide Based on My Screw-Up
- Check the Kelvin (K) rating: For greens and herbs, stick to 3000K-4000K (warm to neutral white). Avoid 5000K+.
- Look for “Full Spectrum” or “Grow Light” on the box. The Feit Electric PAR38 grow light has it printed right on the front. The standard flood light does not.
- Don’t rush the research. I rushed because of the deadline, and I paid a $400 premium for speed on top of a $1,600 mistake.
- Test on one rack first. If I’d tested one bulb on one tray of basil before buying 40, I’d have seen the problem.
There’s something weirdly satisfying about figuring this out. After the panic, the drama, and the budget blowout, I now have a strict checklist for any lighting project. I still kick myself for that week in February 2024. If I’d just read the fine print on the spectrum, I would have saved $3,200 and a lot of credibility.
Take it from someone who made the mistake: a Feit Electric PAR38 LED grow light is a great product, but only if you buy the right one. The standard PAR38 flood light is for your yard. The grow light version is for your plants. They look the same, they cost almost the same, but they are not interchangeable.
Bottom line: Buy the right bulb the first time. It’s cheaper than buying it twice.