Getting a new enclosure for my beardy soon, for the life of me I can't find a 90 cm fixture here in Denmark so my options are 120 cm or 60 cm. The enclosure in question will be 120 x 60 x 60 so it would either be the full length of the enclosure or half. Which one should I go with? Getting the Reptisun T5HO btw
OK , I'd go for the 60cm unit as the better of the two in your case.
Since you are in Denmark, try Birmingham Reptile Centre in the UK , you will find they are very easy to deal with and more than happy to send you a UVB tube and or reflector hood in the post. https://www.reptile-specialist.co.uk/