Hi everyone, its been a few months now since I've had my Opae Ula in my 90 litre set up. All shrimp doing well and swimming around happily. Still not fed them. However my water has turned green. Shrimp seem happy about it but looks unsightly for me.
Clean the front glass to see how green it actually is. While there's been some suggestions on how to clear the tank you still really need to find the cause of the green water. There's just too much nutrients in there feeding the algae. Something has been feeding it. If it were me I would do a major water change probably 25% -50%. Wait a week and see how it goes. Then do another water change. The tank is established so I believe it won't hurt. Was everything new & clean when you originally set up the tank especially the gravel.