Good morning, so i have a question regarding internal filters. I'm starting a 5g crayfish tank and intend to have an internal filter due to space and noise constraints. Browsing around, it seems the choices are very limited these days.
There's the Whisper Internal series which is what I currently have and find it rather noisy due to the waterfall effect. I also have a Fluval 1 original that is missing the impeller shaft (if I could get that fixed, I wouldn't mind using that).
Other than Fluval being in its third internal iteration, the Eheim Aquaball, and the few brands that I haven't heard of before, are there any other choices? Back in the 90's I had a Aquarium Systems Duetto DJ-50 that I really liked. According to Marineland's website, it still exists but good luck finding one. I liked it for the fact that it was internal, had a 360 degree adustable output and it was very slim. If anyone has any alternatives, I'm all ears.