Randy's mom gave me test tubes with a styrofoam holder one year.. like the ones the doctor will use to get your blood work.... I tried them.. to hold over cuttings from NC farms.. when I did a big order... and they all leaked the water out... I can say those are not a good choice.. and they were hard to fill ... so I would assume if I filled them with mix .. they wouldn't be easy to water.. never saw the ones with caps on both ends.. love that!!!
