Can't use hydragenum for the potions

[username_3551331]

Can't use hydragenum for the potions

http://i.imgur.com/29Ci0.jpg
I'm on Chapter 2 and as you can see I can't use any ingredient with Hydragenum for any potion that requires it.
What's the problem ? I created potions fine until this chapter.

 

[Olloki]

It needs Aether, the symbol is not the same

Spoiler

 

[tommy5761]

http://i.imgur.com/29Ci0.jpg
I'm on Chapter 2 and as you can see I can't use any ingredient with Hydragenum for any potion that requires it.
What's the problem ? I created potions fine until this chapter.

According to the pic that particular bomb requires Aether . Same shade of blue but different ingredient . Look at the difference in symbols .

 

[username_3551331]

Oh so foolish of me thanks,they're both blue so I thought they are the same,thanks
You can close the topic or what ever now.