cheeseisdisgusting@lemmy.sdf.orgtoHouseplants@mander.xyz•PSA: Don't buy these or similar units. These are snake oil. They do not work nor are they accurate.English
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1 year agoYep, same. Mine corroded after a few months. Haven’t tried the epoxy idea from the comments but it sounds promising…
I’ve got some Barrina T5 1ft grow lights that everybody on IKEA Greenhouse Club recommends. I checked the PPFD with Photone, directly under the centre of the light strip: 72.9 at 20cm away, 47.5 at 30cm away, 34.8 at 35cm away. They’ve served me very well; I’ve got plants in a living room that get very little natural light but with these lights they’ve been thriving!
For other plants, I’ve got some GE grow light bulbs. These ones I’ve screwed into table lamps for my smaller plants. For these bulbs, the PPFD measurements I got were 300 at 10cm away 100 at 20cm away (directly under the bulb).