Harlequin Tusk Help

[ryhiem]

I am need of some advice with my Tusk. He has an open wound it seems that has gotten worse. The wound has some sort of white material coming out, not slimy or puss like.

He still has his appetite but has become lethargic. Ive started to mix his shrimp with kanaplex but not sure if this is the right approach.

Water parameters are

saltinity 1.026

temp 79.5

ammonia 0

nitrite 0

nitrate 5-10

phos 0

pH 8

Any advice on treatment or possible diagnosis would be appreciated!