3D Printed Aquarium Cover Spacer for Better Water Flow

A real thing, made fresh for you when you order.

Product pictures are made from the 3D model, not photographed.

$13.99

Plus $7.95 flat shipping to US addresses.

Color: Gray

How many

Made to order. We print it in the USA after you buy, so print time comes before ship time.

Flat $7.95 shipping. Made in the USA. Broken or wrong? Send a photo within 30 days and we reprint it.

What it does

Lifts your tank cover just enough so water can cool down through evaporation, keeping fish safe from overheating.
Stops fish from jumping out while still letting heat escape, so your tank stays in the right temperature range.
Print on demand means you get exactly what your aquarium needs without waiting.

Your fish stay healthy when your tank stays cool. During hot months, even with the heater off, water gets too warm. These spacers prop your cover open just right so water can cool down naturally, keeping your fish comfortable all summer long.

You place these under your cover to create a small gap. Evaporating water cools the tank, but the spacers keep the opening small enough that fish cannot escape.

No waiting for shipping, no guessing if they will fit. You customize, you print, you install.

1.8k downloads in the maker community. That is interest in the design on the site it came from, not our sales.

How big it is

Size: 15 × 70 × 40 mmabout the size of a soda can
Made: In the USA, printed when you order

Sizes come from the real model file, not a guess.

What you get

One printed piece, in the color you pick.
Nothing else to buy. It works as it arrives.

What it is made of

PLA, printed in one solid color. Compare the materials.

Printed plastic is strong for its size, but it is not metal. We have not load tested this design, so we do not publish a weight rating. Keep it out of a hot car and away from open flame.