Excellent product, hope to keep the nitrates and ammonia down and beneficial bacteria colony up. Would recommend for all aquarium keeping enthusiasts. Read more

This is great product no power required just work with air filter. And check how media moving after days. It will take some time for all media moving. Read more

Looks good but doesn’t filter very well. I use it as additional filter. Read more

I’m not happy with this product. I don’t know what wrong. I’ve change my air pump twice already and at first it will work fine. Then the next day, it will just go back like I just installed it the first day. Read more

I ended up falling down the same YouTube rabbit hole that likely brought you here, reading this review at 2am on a work night wondering if you really need to add this to your aquarium? (I did) Do your fish really need more media? (probably) Is it going to be bulky in my tank? (Kinda but you can easily hide it) Will I hate noticing it in there? (Unlikely, it’s pretty mesmerizing watching all that media flow) Is it loud? (It makes bubbles). This thing comes about 70% full of k1 in the main chamber. I added about a handful of lava rock that I didn’t pick up outside of a casino before boiling and slight hammering. You could use some seachem matrix, ceramic rings, coarse gravel, or absolutely nothing. It’s super extra, you don’t have to do it, but I have lots of time and extra media so I maximized the space this thing is taking up in my tank. My second sponge was slightly damaged, as it is more of an egg shape than a circle. I went with the flow and put it on top of the regular sponge and squished them both in there as extra media. This filter for me is a secondary to a hang-on-back which provides good scrubbing to the water but doesn’t make the most stable biofilter, as I remove that cartridge every month. I use this filter as a big aerated chamber for bio filtration. For that purpose, this has potential to be an incredible filter. It’s not going to leave you with crystal clear water like a HOB will, that’s not really the point of it, even though that little pre-filter sponge is going to catch some debris, this isn’t a pump and it’s not going to churn your water. If you have another filter that provides good water flow and scrubbing, this is going to keep your tank more stable. Removing the k1 entirely and replacing it with a better media such as above would give you like 10x better results though. I went half and half, because I like watching the k1 swirl and it’s decent media, but it isn’t meant for this application, it’s designed for massive systems. It does self clean though, which promotes stronger, younger bacteria. If you don’t already have a sump or canister to house a decent amount of media, you should probably buy it. It’s built well, comes with lots of media. I wouldn’t spend the extra $10 for the Ziss when this thing can take care of bio-filtration in your tank out of the box and self clean it’s media. Read more

Good quality! And fast delivery! Read more

Nice product Read more