Thank you everyone for your replies. 1 has passed today. The other isnāt look good. Theyāve not been eating. The other angels are fine as is the algae eater (waiting to see what kind) still think changing the substrate has caused the cycle to crash. Lfs told him his water was good thereās a picture attached of what they looked like last night. They really look ill. Heās had them for 5 months now.