Posted: 28/03/2014 at 08:45
ommthree, at this stage your tom seedlings need nothing more than as much light as possible and some warmth. They're too young to cope with fertiliser.
With artificial lighting, keep the seedlings as close to the globes as you can. An inch and a half is fine. The seedlings won't burn. As the seedlings develop, raise the lights, but keep the narrow gap. In a 24-hour cycle, the seedlings need at least 6 hours of darkness. And don't overwater them.
Beetroot, like most root veg, are best sown directly into the ground when the soil is warm enough.