Even if it’s not expensive, Is there a high quality item every serious enthusiast owns?
Or maybe it’s a highly prized holy grail item you’d give your right arm for.
Is there something you’ve had an eye on for a while and you’re just waiting for an excuse to treat yourself?
In reef aquariums people are currently obsessed with this -
https://charterhouse-aquatics.com/shop/aquatics/pumps/aqua-illumination/ai-nero-5-powerhead
It moves water. Not anywhere in particular, just makes it move within the tank. It does this job quite well. It sounds ridiculous when you try to explain it to anyone that’s not part of the hobby.
It’s good for the corals, they like being bashed about a bit, like the waves would in the sea. Corals are very weird animals.
Marine tanks are just full of weird things. Love hearing the stories from friends and acquaintances who’re into it.