have 5 calistus in my tank, did a water change today aprox 10 % and added aqua plus, they seemed all fine , moving out all joly, now aprox 8-9 hrs later, 4 of them are all near the sand hardly moving. one of the is in the corner of the tank hardly moving, just one swiming about.. what should i do
please help! chers
ps. i dont have a test kit so dont know the concentrations of the water

please help! chers
ps. i dont have a test kit so dont know the concentrations of the water
