Any recommendations for a smaller filter that works well that’s underwater?Dray said:
Any underwater recommendations that are somewhat small but strong?fissh said:there is no such thing as over filtering. unless your fish are bouncing off the side of the tank.
There's pretty much just sponge filters, as far as I'm aware. Under gravel filters don't really exist anymore and have tons of problems, and the "underwater" HOB filters are more expensive and substantially worse than a normal sponge filter. You probably want a sponge filter.Tpane27 said:Perhaps! I’m not very well educated on underwater filters or types
Gonna look into this now. Thank you!DylanM said:
How do sponge filters work in terms of using bio media?Dray said:My recommendation would be a CubeFilter from Swiss Tropicals. But there are MANY sponge filters out there that are cheaper and almost as good.
The Ziss Bubble Bio Moving Bed filter has had some good reviews. It's not expensive.DylanM said:
I ended up ordering an aquatop caf sponge filter. It’s for up to a 25 gallon and I have my fluval c3 so this sponge should do well. I’ll replace my big air stone with this.fissh said:try this, they work well
I might see how this works for a little. The bubbles are larger rather than small but still create a lot of water movement. The airline plugs right into it and I can’t see the inside so I may end up taking it apart.Islandvic said:I think the Aquatop might be built similar to some Azoo brand sponge filters I bought on clearance at the beginning of the year. I've got 1 large HikarI Bacto Surge sponge filter that is built identical also. I think the Chinese copy each others' plans.
There were designed to plug in the air line tubing to a port, and the air was released at the bottom. I tried it and the air bubbles coming out were large and I thought it hampered the flow.
I took it all apart and used wire cutter to snip the inner plastic to allow me to slip the airline tubing into the inside of the sponge filter along with an air stone.
This method produced smaller bubbles and more of them. Water flow was greatly enhanced also.
Does your setup use an air stone? If so, is it an older one? They become clogged over time.
If you hold the air line and pull the sponge filter's lift tube to the water line, you can see how much water flow out of it.
The sponge filter I prefer and highly recommend is from the brand ATI and their Hydro Sponge line of sponge filters. Their parts are interchangeable, and have a modular design. They can be stacked together also. I have a fine foam sponge filter stacked on top of a coarse foam sponge filter in our 55 gallon African cichlid tank for example. I buy my ATI products from kensfish.com .
Thank you! It doesn’t appear the sponge really pulls in water. How does the sponge filter work? I only ask since you have the same one. There’s plenty of bubbles but it doesn’t seem to suction all that well. Is it more of a bio filter?coralbandit said:I run the Aquatop sponges in many of my tanks with my AquaClear HOBs .
You will be all set and very happy with your choice .
Just pull it out every now and then and give it a squeeze in water change bucket ..
Most of the Aquatops have a built in air diffuser that work great and need only occasional cleaning ..