was able to change media without having to shut down filter. Also was able to set up reminders to change media gave constant information. the only reason for the bad review is after about 2 weeks i would get a low flow error that was impossible to fix I would take the whole thing apart clean it no clogs found but again flow would shut down and it would be a constant problem.

After an hour putting it together and trying to make it work, which it never did, it took another 20 minutes to break it down and put it back in the box to return it. $250 for a piece of crap.

This is a top rated product. At the best price out there. Petco really came through for me! Fast delivery, and updates the whole time!

I bought this a month ago and so far it is the best filter I have owned for my 55 gal saltwater reef tank. I bought it mostly for the maintenance of the filter & cartridges that was always a pain and a mess with previous filters. This G3 is a no mess, no fuss job to clean the pre-filter and change the chemical. The auto stop valve works great. There is plenty of flow for a 55 gal reef tank. Easy to set up and prime. This is a very well thought out and designed filter. I also appreciate the info screen. That was a feature I didn't really think I would care about. However, I find myself checking the EC almost daily and just learning what that tells me about what's going on in my tank. I also appreciate how it keeps track of when to clean the mechanical, chemical and biological media. The recommended cleaning of the mechanical filter is every 14 days. After my first 14 days I still had 100% flow but removed and cleaned it anyway. It was a breeze and no mess! I will continue to follow up with reviews further along but after 1 month I can say I highly recommend this filter. Greg Key, 55 gal reef tank owner , St. Louis, MO, USA

Got this guy almost a year ago and it has ran perfectly the entire time. Cleaning is easy and not messy as well as accurate on the things it monitors

Dont waist your money. I have 100 gal tank ive had the G6 for 7 weeks im on my 4th chim filter and second mechanical filter and every day i come home and its pumping no water at all so i tack it down clean it all out get about half flow and befor i go to bed its stopped pumping. This is a horrible filter system

I did a lot of research before purchasing my G3,reading some of the other reviews it was hard to pull the trigger. I am so glad I did it has been 14 days running so I did my first cartridge rinse it took all of 10 minutes(will be faster next time). I had towels and a bucket on hand figuring it would be like doing my old hang on, to my surprise nothing Wow what a relief.Along with the ease of filter changes the performance is amazing unlike other reviews complaining about bubbles filling the tank it never even burped when I started it up. although I never had a water quality problem with my other filter this thing makes my water actually shine. The initial set up time was no more the a half hour everything about this filter shouts quality, it fit right in my cabinet and you never notice the intake or returns in the tank. if you are looking to upgrade or just starting out spend the $$$$ it is well worth it. My wife used to complain about the noise from the other filter and the mess I made every Sunday (that alone makes it worth the investment) now she enjoys my tank almost as much as I do. My tank is a 55 gal reef that has the happiest snail to most beautiful corals.in closing thanks fluval this is a fantastic piece of equipment keep up the great work...

great nice fliter the heat it threw off would attract bugs an they would live in it ended up getting rid of it WILL NEVER BUY IT ANYMORE