Anybody Used These Boxes For Fish Keeping Before?

[Seed_Lord]

Hello, Looking at a cheaper alternative to fish tanks (having trouble finding the right sized ones for under 10-15 quid) to keep trio's of guppies in, from what ive read HDPE is the best plastic for being non toxic to fish etc, these boxes say they have a polypropylene FINISH http/www.argos.co.uk/static/Product/partNumber/9286090/Trail/searchtext%3ESTORAGE+BOXES.htm

Just wondering if anybodies used these before? or can direct me to similar priced fish safe containers?

Thanks muchos