Do I need to protect Carrots & Lettuce

I've had my first dabble at growing veg and planted Carrots & Lettuce just over a week ago. Do I need to cover them to protect from aphids and slugs?

I saw this on amazon which looked perfect for my small veg patch?

 

Eden1

You can cover with fleece Cheap and effective

Next spring you can use nematodes ......for slugs and others for pests in the soil.

I sow carrots and immediately cover with fleece. Apart from lifting to thin them a couple of times keep carrots covered and this prevents the dreaded carrot fly.

However for lettuce I simply check them for molluscs at night with a torch and pick them off.

I have never found aphids to be a problem on crops in veg patch

I made cloches for very early crops......10’ lengths of corrugated plastic sheets and wire hoops .....but fleece is very economical and effective