​Jellyfish are beautiful, but a fragile species and need to be kept in a stable environment. Over the years I have identified different things to look out for to keep jellyfish happy and in a good condition. If you are finding many of your jellyfish are becoming damaged then check for the following:

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• Is the flow rate too high causing them to flip inside out or to break up

• Is the flow too slow causing jellyfish to not pulse properly, ball up and become lazy

• Any obstacles within the tank where the jellyfish are getting caught; spray bar, gauze causing physical damage/holes in their bells

• Any rough edges within the tank ? The jellyfish may continually scrape against; it cause damage over weeks not days, particularly on the tops of the bell. Feel around the tank this will be obvious.

• Hydroid and polyp growth; jellyfish become balled up and deformed where they are getting stung on their bells and when they try to eat the loose hydroids following tank maintenance

• Is the gauze dirty; this will cause dead patches along the gauze where water will be drawn to the cleaner areas which may increase the water pressure going through the gauze. This may result in jellyfish becoming stuck onto the gauze. If any jellyfish stick there is even more pressure and you will find more and more jellyfish becoming stuck resulting in high mortality rates

• Is the gauze on properly; removable gauzes must be flush within the tank with no gaps or edges sticking out that the jellyfish could scrape on

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