The mini sponge pre filter works great. No particles reach my Magnum 450 canister filter. No apparent restriction of flow. Well, except when the filter got plugged up. easy off, easy on. Simple to clean. As far as the bio rings, how are you to know if they work. I replaced the carbon with the rings.
This went on one of my small filters. It works great it doesn't seem to cut down on the flow and it stops sand particle from getting into my filter. These are great I have them on my HOB and canister filters.
Great Lil addition to my hob filter..
Fits perfectly on the intake of my aqua clear 30
I learned about this mini sponge on the Aquarium-Co op video and decided to try it. So far so good. A really good idea to put this extra filter on the intake, I think. Great web site. Really good You Tube videos and fast shipping. I'm happy.
Pre-Filters are a must for any "Hang-on-Back" filter. These are awesome. I do have one issue though. I purchased one of these 3 weeks ago for $11.99 with $6.00 Priority Mail shipping. 10 days later the price was $12.99 and $8.00 Priority Mail shipping. What's up with the $1.00 increase in the product and $2.00 increase in shipping? I was going to order another thing from this site, for $2.99 and the shipping was still $8.00. It's now cheaper to get things at the local pet store. Probably won't order anything more from this site.
Great prefilter sponge! Protects fry from getting sucked into the filter PLUS benificial bacteria grows on it! And, it helps prevent sand (substrate) from getting into the filter. Shipped fast, too! A ton of benefits from an inexpensive item!
Fit my filter's intake perfectly and really helps increase the effectiveness of filtration in my nano (5.5 gallon) tank. My fish enjoys picking off left over food on it, and the sponge is super-fine!
Nice! No more trying to find or rig cartridges for this filter.
This is my second review, but I think they are great. I feel that my filtration has been greatly enhanced. Got the idea from Gory s video.
Got these as an xmas gift to give them a whirl. The seem to be working just fine and pick up little bit that would have just been blown around the tank. I may up size to the medium intake filter with the larger pores but I don't currently have anything to put in the bottom to close up that hole. In the interest of keeping things simple I started with these.
The shipping was super fast. The sponges did a perfect job. My water is super clean. Will buy more when I get a larger tank.
I decided to try these small intake sponges on my spray bar to quiet the noise and to also add filtration and bam, it's quiet and cleaning the water too! I need some more and didn't buy any last night in case Corey was low on inventory like his video said and I don't need them they are just for spares, but that's no worry, I will place another order cuz it's always good to have some of these on stand by! Love this website store and wished I lived near Corey, would be a fun job for sure! Thanks
Awesome products from Cory. Shipped fast and included a never clog airstone.
I love the size of these they fit perfect on my intakes on my filters. Can't get these at any of my 5 local pet stores but I found my supplier now!
Working as expected!!!
I'm using as a pre filter on my mini canister filter for my shrimp tank and it works great.
It always has baby shrimp crawling all over it
Works great on my FX6. Nitrates shot down immediately