hi im upgrading my shitty little bathroom extractor fan i have in my grow room(walk in cupboard). i use a 400w hps light and my temps a little high 85-90. i have seen this fan on amazon http://www.amazon.co.uk/gp/product/B004BRO9PK/ref=noref?ie=UTF8&s=outdoors&psc=1 i was just wondering how loud 46 db is ? would this fan do the job im after or should i spend more on a better quality fan is basically my question.