I had a half dollar size Banggia Cardinal fish pass away within my hex tank.
I can only assume he passed unless invisible fish is his specialty. We have looked high and low, both in and outside the tank with no luck. The tank has tons of hiding spots and areas under the LR
where a sneaky shrimp or lawnmower could tuck away a future snack. Hes been MIA two days now and my ammonia levels are climbing.
Here is my question. Can you over water change? I have been doing 20% a week, but do not want to really mess the tank up by over changes. I also do not wish to remove all of the live rocks, if you seen the tank you would understand why, to find the missing cardinal.
We are now sure is not out of the tank, it is well covered and he is not in any location we can see even when using a mirror to see behind and under areas. We have also sifted as much LS
as we can access with no luck either.
Thoughts about increasing water changes and cutting back on feedings until things settles back down? Other ideas or suggestions?
All other fish appear to be doing well.