Great hob filter that will fit. Tidal 75 or 110 no more changing cartridges it comes with a sponge and a bag of media. You add a layer of poly floss between these and your good to go. Rinse every 2 weeks. Aquaclear filters same as above but a bigger sponge. These are great tried and true filters been around 30+yrs. only thing they won’t restart with a power outage and the motor may burn out if no one is home to restart it. Marineland bio-wheel 350. This is the cheapest and does come with cartridges. But you change out the cartridge for sponge and add some media in the front of the sponge and it is good to go for yrs. this is also tried and true been around 30+ yrs too. I used the 350 on a 29g for years. For under $30 you can’t go wrong. I use the first and last ones. Both work great. Thing with the tidal it comes with all you need but floss.