Ive read some articles about how the fx5/6 only hold something like 20% more bio media that a regular old fluval 406. The fx is huge and doesn't seem to utilize the space very efficiently. I've never owned an Fx just due to the price and all the negative reviews I've seen on the boards.
For like $70 you can get a sunsun 304 rated at 525gph with 5 media trays . I have some model 302's which I love. Quality surpassed my (low) expectations. The spray bars kind of suck, that's my only complaint. And if it breaks down, it cost 1/6 the price of an eheim 2262. So w/e
If im not mistaken the issue with the oddysea cfs500 is the orings are too large and will break the piece that slides over the coupler. Smaller orings solves the issue
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