They do best planted at lower third of tank under moderate light and water flow and fed 2-3X per week. they are sensitive to off track parameters in which good quality and moderate water flow is required
As stated. . a pic or two always help to assess anything unusual.
Ph range 8.1-8.3
Temp 77-79
salinity 1.025
alk 8-9
CA 450
Mag 1300