i had one for a year and a half in my 50breeder with 4 bulb t-5 and did great.it was a green carpet though.when i first got him he was the size of a softball and his mouth was pertruding and white.when i got rid of him he was twice the size and its mouth was reddish as well.
Heat from MH nothing a chiller can't solve I personally have my haddoni under t5 but the depth is only around 18 that's a great lookin carpet seems very healthy good find