A UVB lamp when indoors.
Calcium on their food daily
Bath babies daily in warm water, no deeper than join between plastron & carapace, 5 to 10 min.
Vitamin supplement,: Nutrobal / Vionate. Can be obtained from Vetark & can be fed weekly but if you feed fresh wild greens it is not necessary
A place to bask at 30C during day.
Somewhere to hide & feel safe.
Small water dish in their pen.
Worming twice a year, spring / autumn. ( panacur 2.5% 3ml per Kg body weight )