UTJeeper Posted March 28, 2022 Share Posted March 28, 2022 I have been successfully hatching Aquarium Co-op green tin brine shrimp in a Ziss hatchery for months to use as food for my Apisto fry. Things had been going fine for months and then all the sudden about 2 weeks ago my hatches starting dying and sinking to the bottom of the Ziss hatchery. I am still getting a good hatch rate, they just die within an hour of hatching some almost immediately. I tried scrubbing the Ziss hatchery real well, both with just fresh water and also with dish soap and a thorough rinse. I fill water to the same level, about 1 inch from the top. I have kept the salt constant with 2Tbsp of instant ocean that I've been using all along. I let it dissolve for 1 hour before adding eggs. I have kept the temp constant with the aqueon 5w mini heater at about 29C, I observe the temp several times a day. I tried RO water to eliminate a change in water quality from the tap as an issue, no help. I tried different air volume, less aggressive, more aggressive, no help. I even tried a different brand egg, BNYEE eggs hatched and died too. Any ideas on what would cause this to happen? Until 2 weeks ago I was getting nice healthy hatches for months. Thanks for the help! Link to comment Share on other sites More sharing options...
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