That set up looks very natural to me, but then I'm a european keeping my corns in a rack! I may well decide to challenge my carpentry skills in producing vivs in a few years, but as much as I love my corns I'm just not prepared to pay the prices charged for a decent-sized viv in this country. For a 48-inchx 24x24 one of the best deals I've seen is £130 without equipment excluding delivery. For that price I can have my corns in big tubs in a rack with their heating. To my mind ready-made vivs are a licence to print money, I only wish I was better at carpentry but have seen some very good building plans on the web.