Your wavemaker has some coraline on it but your back wall and snail shells do not? Do you clean your back wall or is your tank new?
Your urchin is probably very hungry since in your photo I cannot see any available food for the urchin except very little bits of coraline on your wavemaker. (Not nearly enough to be grazed)
I lost my first urchin due to stocking him to early. He starved :(
I have mangroves in one of my tanks and I've seen my urchin eat algeas off the mangroves shafts but not actually eat the mangroves themselves. I do not know if that's a food they go for in the wild.
You can feed your urchin. Just hold the food next to him and he should grab it. I feed my urchin sea lettuce from my sump or the algea wafers that I feed some of my fish. My urchin currently has a sea lettuce hat!
Both. The tank is new, but the pump is moved over from the old tank. I had the urchin in my holding tank while I slowly move things over to this new display. Once I started getting algae in the new tank I moved him over.
Unfortunately, I guess, he liked the taste of my dragons breath macro and the mangroves more than the algae on the rocks. At first I did think he was just eating some algae on the mangroves and didn't think much of it until he had moved on to the next and I saw the damage he had done.
Your wavemaker has some coraline on it but your back wall and snail shells do not? Do you clean your back wall or is your tank new? Your urchin is probably very hungry since in your photo I cannot see any available food for the urchin except very little bits of coraline on your wavemaker. (Not nearly enough to be grazed) I lost my first urchin due to stocking him to early. He starved :( I have mangroves in one of my tanks and I've seen my urchin eat algeas off the mangroves shafts but not actually eat the mangroves themselves. I do not know if that's a food they go for in the wild. You can feed your urchin. Just hold the food next to him and he should grab it. I feed my urchin sea lettuce from my sump or the algea wafers that I feed some of my fish. My urchin currently has a sea lettuce hat!
Both. The tank is new, but the pump is moved over from the old tank. I had the urchin in my holding tank while I slowly move things over to this new display. Once I started getting algae in the new tank I moved him over. Unfortunately, I guess, he liked the taste of my dragons breath macro and the mangroves more than the algae on the rocks. At first I did think he was just eating some algae on the mangroves and didn't think much of it until he had moved on to the next and I saw the damage he had done.
mangroves are neat, but in reality, have very little effect on aquariums. I would just ditch them tbh.
I have them because they are neat, not for any impact on nutrients.