Hi im growing 3 Fast bud#2 autos in canna coco pro+ they didint do much growing between day 7 and day 21 really but have really taken off since day 21 one is doimg really well but the other 2 are a little smaller and have some dry curling leaves im using the canna grow chart ph is 5.8 and the runoff is 6.0-6.1
anybody out there have any idea why the leaves are feeling dry and curling down also have some brown rusty spots?? Any help would be much appreciated. 
anybody out there have any idea why the leaves are feeling dry and curling down also have some brown rusty spots?? Any help would be much appreciated.
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