Gerberas

I would like to know what I have to do so that the gerbera does not dirty so much the water in the vase, normally I change the water every 5 days.

Thank you,

Lorena

I would like to know what I have to do so that the gerbera does not dirty so much the water in the vase, normally I change the water every 5 days.

Thank you,

Lorena