Help needed | Miscellaneous | Commercial Hydroponics farming in India

Hi am a newbie in gardening...I had bought couple of plants 2 weeks back from lalbagh nursery, of which marigold and geranium had wilted completely in the first week and now my indoor hanging creeper not growing properly, ( have not changed the container, using the same one from nursery)
Its leaves are drying and dropping. Don't know what to do.pls help

P.s I dont know the name of the plant.am not able to recognise any from the web

Thanks in advance