Sad Zoo's

[StarGazer_1]

Hi all
My zoos are sad
half are closed up and wont come out
levels are good
NO3 10
NO2 0
ALK 180
PH 8.4
a little cyano
lights are a year old, 130 watts actinic/daylight
30gal tall hex
all else is well
thx

[uscharalph]

Light bulbs may need replacing.

[Ritten]

Have you looked with a flashlight at night for any pests that may be harming them?

[christyum22]

check ur lights and water flow