black marks on the leaves

[figgins]

my plants are getting little black circles on the leaves and theres loads of them wot is it doing to the plants is it gonna kill them

[WimpyChimp]

flush it out brotha

[mscaboo]

sounds like you have a pest problem

[mscaboo]

pics would help thou

[stinkyattic]

Tiny black spots, or big black circles? Small=pests, large=fungus.