Sunset recommends "full sun or partial shade" for horsetail (Equisetum hyemale). It doesn't sound like a "low light" plant to me.
Sunset also recommends "locate in marshy area or pool."
So it likes wet feet but wants lots of sun.
Hmmm. Sounds like you've read some conflicting information...people with whom I share a back-yard property line have some horsetail IN THE GROUND
near their driveway. When I walk the dogs around this block, I see some very happy horsetail, expanding away up and down their driveway. It gets western afternoon sun but is near some gladioli which the neighbors keep very wet, so the horsetail is very happy, dark green, and spreading.
Keep it in a container: Sunset characterizes horsetail as "extremely invasive and difficult to get rid of."
USDA Zone 9, Sunset Zone 17