[odin]

It could be the PH maybe? Do you have anything in your tank to buffer the water? I find crushed coral substrate the best to use. What is your Nitrate levels?

[Bat]

0.0 nitrate/nitrite

Buffer used crashed seashell, seems it not enough. I have not crushed coral. Eggshell or turtle calcium are good substitute?

[odin]

I'm not sure what turtle calcium is but eggshell will work, how old is your tank again?

[Bat]

Eight month. Why? You think than biological activity are finished carbonates? There are a lot of snails too.

[odin]

If your snails are not having issues with their shells breaking down i don't think the PH is the issue with the young perishing, maybe the tank just isn't mature enough? What food do you use and how often do you feed?

[Bat]

No feed. Should I do it?

[odin]

You can try, i feed my baby tank once a week but a VERY very small amount of spirulina powder, i get a medicine syringe and suck up tank water then push it out into a container and add my spirulina powder while mixing it then suck it up with the syringe and blow out the food under the waters surface.

[opae ula related]

Do you see the dead shrimp? You sure they are not hiding?

[odin]

Do you see the dead shrimp? You sure they are not hiding?

That's a really good point, @Bat have you seen any dead babys?

[Bat]

No one live or dead, my friends. Disappeared. A lot of larvae, many young shrimps walking over the rocks... and few days later disappeared.