We have 3 of these filters (2 70s and one 30) and haven't had problems with any of them. The 30 is on our saltwater setup and works great. They are quiet as long as you make sure they rest fully on the tank- they fit very snugly and might rattle if they are just perching on the side. They filter through the water really well and I love that they provide the permanent biological filtration that I could steal and use in another tank to get it started cycling. Everything seems to be really well thought out for ease of use and reliability. From reading other reviews, maybe there are some lemons out there so I guess you should hold on to your receipt until you're satisfied. But we're happy campers with all 3 of ours!
Loved this from the start can't believe I ever tried something different (Aqua clear - best rated power filter on here). I have 2 EX45's running alongside a 360C on a 55 Gallon and both are very quiet. I have another EX45 on a 36G and a EX30 on a 20 gallon and I have never had any problems. Easy to use, easy to clean, easy to replace media and keeps your water clean. Can be pricey depending where you buy so shop around.
Nice that you don't have to prime it, but wait until you plug it in... It sounds like you are at a carnival. Way to loud.... I wouldn't recommend it to anyone.
I have had this for a couple of months but after a month it just turns off randomly maybe its just mine. When it works it is a great filter and you never have to prime.
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