For what you have you're doing fine. If you want to step it up on the
tank I'd suggest a kanger mini protank or mini aerotank. I just like the glass since I got real tired of the plastic ones cracking or becoming cloudy. Another reason for one of those is the 510 drip tip compatibility. Should you find one that you really like and then decide to get a larger tank later you can take the drip tip and move it over.