Ziss Tumbler

Ziss Tumbler (Fish Egg Incubator)

Ziss Tumblers are completely new patented fish egg incubators. Ziss Tumblers are mechanically equivalent to the McDonald hatching jar, however the Ziss Tumblers can be installed inside your aquarium and are simply operated by an aquarium air pump which is controlled by an adjustable air valve.

These devices are most often used for African Cichlids (non adhesive eggs), but it can also be used for bee shrimp, pleco and corydoras eggs (adhesive eggs). You can adjust the water flow to tumble the eggs whether they are large or small (non adhesive eggs), or can let them sit and just give sufficient water flow for hatching around them (adhesive eggs).
Ziss tumblers will give much higher hatching yields and save baby fish fry that have been hatched.


  • All kind of fish eggs can be used
  • Can give excellent hatching yield
  • Can be used at early stage striped eggs and very sensitive fish eggs
  • Can give irregular moving action by additional cap design (non adhesive eggs)
  • Shock by water change can be eliminated
  • Embryonic development can be easily observed
  • Bad/rotten eggs can be easily removed.
  • Eggs and sac fry will not be stressed by round bottom design
  • Stand up design for easy use
  • High impact resistance Polycarbonate resin used
  • Filter Sponge, Ziss Air Valve (ZV-4), Ziss Cleanable Air Stone (ZAD-12) included


Inner Diameter Volume Overall Size Individual Mount Recommand Use
ZET-80 80mm 700ml 8.5cm x 27cm Yes Big Fish Eggs
ZET-80 80mm 700ml 8.5cm x 27cm Yes Big Fish Eggs
ZET-80 80mm 700ml 8.5cm x 27cm Yes Big Fish Eggs
ZET-80 80mm 700ml 8.5cm x 27cm Yes Big Fish Eggs

Operation Guide

step 1

Clean all parts with water before use

step 2

Open the main assembly

step 3

Fill with aquarium water

step 4

Add your eggs

step 5

Close the assembly

step 6

Place Ziss Tumbler into your aquarium

step 7

Remove trapped air in the sponge and the main chamber

step 8

Connect to air supply

step 9

Adjust air control valve until your eggs are gently moving (adhesive eggs)

* Non adhesive eggs (Ancistrus, Corydoras etc.) don’t need to tumble.

ZET – 80

ZET – 65

ZET – 55

ZET – E55


Top 4 2014 Global Pet Expo Product Picked up by Reef Builders.com
Top 2014 SuperZoo New Product Picked up by i-5 Publishing (Fish Channel.com)
Excellent Review (4.5/5.0) Published by Practical FishKeeping Magazine in Spring 2017

Practical Fishkeeping 2017 Spring

2014 Top New Product

2014 Top New Product