personally i would swap the day glo bulb for a proper heat globe, while the day glo
dose give off heat its not really designed as a heat globe and as such dosnt give off enough heat.
In our 2 and 3 foot enclosures we run 2 60w heat globes and they are able to maintain heat levels at over 36dg .
And i do think that enclosure is a bit on the large side for a 4month
childreni 
