Hey all! So I have a 5.5g that's currently a hospital tank for 1 of my shrimp. Eventually I want to turn this into a betta tank since I have a 10g QT already. My issue is... the topfin internal 10 filter was horrible. I bought a Tetra whisper 10i and I liked it at first... my issue is that the filter cartidges are too much and the filter is overflowing from the top (there's no lid). And because of this, it overflowed over the clip holding it to the tank and onto the floor... it was fine for days... so now I'm upset by it. I'm looking for a good HOB that is not too powerful for a betta in a 5.5 and hopefully something that has a flow adjuster. I want to switch this filter out ASAP before another leak happens or the filter just overflows which defeats its purpose.