Orchid light for living room

[Dragoic]

Heya all i'm new to this forum and i could use some advice since i think i'm getting myself confused or over complicating stuff

So i have a variety of orchids in my living room as its the only place i got space for it.

Atm do i have two Gemma E14 9W light bulbs but my collection have long surpassed their reach and i'm starting to look into a better and more efficient way to give my orchid some light during winter.

For that i've looked a several articles back and forth. Some explain it lux and other in PPFD (From when i can understand is the best way to measure)

I came across this article:
Best Grow Light For Orchids: Buying Tips & Setting Up

But here is where i might not get it. I've been looking at pack of Barrina LED Grow Lights, Full Spectrum, 180W(6 x 30W) which according to their pages gives 137.3 umol/m2/s at 12 inches (30cm). One should in theory be enough at 12 inche for lower light orchids. But according to the article then in order to reach the 100umol/m2/s would i need to place two of them at 12inches due to their rated 137.3 umol/m2/s is only in an test enclosure environment which reflect lights and lower the rated by 20-40%

atm am i used two Ikea SATSUMAS where most of my orchids a placed, Its a mix from lower light paphiopedilum to higher light Brassia.

My question is. How much do i really need and is the calculation of umol/m2/s (137.3 x 2) umol/m2/s x 40% = 109.7 umol/m2/s correct?

Been looking at these Amazon.com. Due to high rating and spectrum should be right and they might fit aesthetically in an living room environment. I am by by no mean a professional orchid grower and is still very much at the novice level and still learning



setup atm facing south side is attached