Too Blue

Starting to get a bit cooler int he house at night, not quite sure just how cold but will need to keep an eye on them. The nodes are so close together I'm finding it really difficult to train them as theres not enough space to get a string round to bend them out of the way...not much I can do about that. Starting to get a bit of discolouration and mottling on the leaves, as usual i suspect this is from a lack of purified water and nutrients. Nothing too worrying yet so no action being taken. Starting to get a bit more smelly and sticky! Buds are still super close together so I'm hoping I avoid any mould.