I used to have a large tank with cudas and payaras and I was using a eheim pro 2, but the problem was it started to leak through the top so I replaced the o ring and then maybe a year later it leaked again so I replaced it with a larger eheim pro 2 and earlier last year it started leaking. I am going to be settting up a 30 gallon and I plan on using a eheim eco, but my question is is the eco less likely to leak then the professional 2 or will it even leak at all?