Well, the weather really sucks right now for growing sprouts so I have been utilizing heat cables as a supplement. They work very well and really improve growth. Depending on the day temperature I either leave them on just at night or all day and night. They have definitely helped salvage a few batches! As I have been busy getting things up an going this year it has been more difficult to pay attention to the weather forecasts for making adjustments to sowing dates. And, of course, the forecast is only good for a day so making adjustments is difficult. Though I have learned that early growth is important in setting a good foundation for later growth.
Last season was so hot the main issue I had was over mature sprouts. This year it is the opposite so far. But I am still a few weeks ahead of where I was last year, so the weather will improve.