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Your tank is quiet.
Fish drift by. Same rocks. Same plants.
Then you drop in and suddenly a tiny skeleton starts pushing a waterwheel, bubbles rising with every turn.
It never stops.
Your fish don't know what to make of him. Neither do your guests.
Your tank, finally in motion
The skeleton pushes the waterwheel non-stop, powered by rising bubbles. Movement your eye can't ignore.
No batteries, no cords, no worry
Hooks up to any standard aquarium air pump with the included tube connector. That's the whole setup.
Safe for your fish
Made from fish-safe PLA with no metal parts and no dyes leaching into the water. Rinse it, drop it in, done.
Stays exactly where you put it
The weighted rocky base holds firm on gravel or sand. No floating, no tipping, no chasing it around the tank.
What you get today
Seasonal production run once this batch sells out, restock pricing may change.
Give your tank a personality — this batch won't last long.
30-day at-home trial
Try Finnegan in your tank for 30 days. If it doesn't move the way you expected or doesn't work as described in daily use, return it for a full refund.
Does it need its own air pump, or does it come with one?
It comes with an air pump, so you have everything needed to set it up. Simply connect the included tubing and plug it in.
How strong does the air flow need to be for the wheel to spin?
A gentle, steady flow from a basic aquarium pump is enough. If the flow is too weak, the wheel slows down. Too strong, and bubbles rush past the paddles.
Is it safe for freshwater and saltwater tanks?
Yes, it works in both. The PLA material won't leach or rust, and there are no metal parts.
How big is it?
The base is about 4 inches wide and the whole piece stands roughly 4 inches tall. Good for tanks 5 gallons and up.
| Order | Cost | Delivery |
|---|---|---|
| 1 item | $7.99 | Up to 20 days |
| 2+ items | Free | Up to 20 days |
| Express (optional) | $19.99 | About 1 week |
Customs duties are prepaid on US orders — nothing to pay on delivery.
Try it at home for 60 days. If it is not right, send it back.
Full terms in our Return & Refund Policy.
Optional. 3% of your item total, added at checkout only if you tick the box.
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