Did you remove the shower head and check for a flow restrictor or mineral deposits blocking the orifices
A flow meter.
My shower head has low flow issues and is making showers uncomfortable. What kinds of shower heads would you recommend for faster flow but still aesthetically pleasing?
to conserve water
A Vichy shower is different from a regular shower due to the distribution of water flow. A Vichy shower has a metal arm with several shower heads running parallel to the ground, allowing the person to shower while lying down.
Standard high-flow aka unrestricted shower heads made before 1995 were water-guzzlers. As of 1995 shower heads must be low-flow, with a rate of 2.5 gallons per minute.
That would depend on the current flow. I'm assuming by "low-flow" you mean less than 2.2 GPM.All shower heads in the USA must be at maximum 2.2 GPM, and it has been that way now for some years.(2.2 minus [low flow GPM]) x (minutes used) = (water saved)
To conserve water.
The shower.
Yes, you can install a tee in the riser. The pressure loss will be minimal since both shower heads will have a flow restrictor unless you remove them. If you remove them, you probably wont notice any difference. If you do notice a difference, put the flow restrictor back in the closest shower head to the shower valve.
the outlet pipe at the base of the shower has not got enough angel for the water to run free
To prevent any back water from the shower head and also the water contamination into system.