sun sun filter

does anyone have any experience with the sunsun 602b or 603b filters? are they any good? heard mixed reviews. ember04

Hi all, I have a 20 gal long tank and a sun sun 602b filter. An essential piece to the filter broke so i had to order a new filter. I have to wait probably a week. I just want to be sure that my fish will be ok for that long. I put a sponge filter in for now and threw all the sponges and...