My dojo loach has a growth completely covering one eye. I've done water changes, added Kanaplex, Maracyn Oxy, and checked ph and water hardness. All levels seem to be in normal range. I cannot find anything online about what is covering the loaches eye. I'm worried he will die before I can find a treatment for him (if there is a treatment). Anyone else have this happen or know what it is? My other loaches are healthy and active. Nothing covering their eyes.