My son’s aquarium is doing fine, as far as I can tell. Some cherry shrimp disappeared, the kuhli loaches and snails are doing fine, as are the tetras and one guppy. The other guppy has vanished. We’re not sure what is causing the disappearances. Maybe not enough feeding, but the idea was an aquarium where the animals eat the plant detritus with minimal feeding, so if that’s the cause then perhaps the aquarium is telling us its ideal fish population? Or the fish are eating the shrimp, or other cause. We did replace the disappeared, if they vanish again we may not replace them. Water quality fine, I test it every week or so with test strips. The plants are flourishing. I add a little “Flourish” plant conditioner from time to time. Above is a picture taken from one end of the tank.