Having been caught out again by the recent cold spell so I decided to invest in a small paraffin heater for my greenhouse
After several false starts with the height of the wick and smoke I now appear to have sorted it.
The one thing I'm not sure about is the effect of the paraffin on seedlings and plants.
There is a faint odour of paraffin in the greenhouse even though there is ventilation as advised in the instructions, when I open the door and obviously if the wick smokes at all it can leave a faint black sooty covering on everything. Are either of these really harmful.
On the plus side my seedlings are now taking off