Today i opened my fluval305 to put in more media and as i took the top part off i hear a small crack then a little plastic bit fell on floor,seem to be where the right hinge is as there a gap,also the dam thing wont shut now,it just pops open when i fill it,it has leaked before and now im gona bin it,why do they make these things out of very poor plastic that breaks too easy, luckly ive got other filters so no emergency,but not happy as hat it less than two months.