It’s no surprise that algae will show up in a tank with inadequate filtration. As we’ve discussed, the bacteria in your filter converts the ammonia that algae loves into other compounds. If your filter can’t remove the solid waste and hold enough bacteria for the livestock and size of your aquarium, your water is always going to be low quality with excess ammonia and other organics present.
While many types of filters exist, not all are created equal. You want a filter that can:
There is no such thing as “too much” filtration. The more water your filter can circulate per hour, the better – as long as your livestock don’t mind the flow!