yes it is possible- some plants do fine in brackish:
Aponogeton crispus
Bacopa monnieri
Cladophora aegagropila
Crinum calamistratum
Crinum natans
Crinum thaianum
Cryptocoryne pontederiifolia
Cryptocoryne wendtii 'Mi Oya'
Glossostigma elatinoides
Lilaeopsis brasiliensis
Lilaeopsis macloviana
Lilaeopsis novae-zelandiae
Microsorum pteropus ''Narrow''
Microsorum pteropus ''Undulata''
Microsorum pteropus ''Philippine''
Microsorum pteropus ''Red''
Nymphaea lotus (zenkeri)
Samolus valerandi
Shinnersia rivularis
Spathiphyllum wallisii
Vesicularia dubyana