Did paul call his labor 'in vain'???

1Co 3:6 I have planted, Apollos watered; but God gave the increase.
1Co 3:7 So then neither is he that planteth any thing, neither he that watereth; but God that giveth the increase.
1Co 3:8 Now he that planteth and he that watereth are one: and every man shall receive his own reward according to his own labor.


"In vain".... sheesh...