so I just recently went to my local exotics vet to see what was up with apollos sinus infection, the vet told me there was nothing to worry about and that all I needed was to increase the humidity. apparently it was not a sinus infection at all and was simply a lack of humidity causing his eye to retain some moisture and crust up. he it looking much better now and I'm hoping that in the weeks to come he feels much better! thanks for all the advice everyone!!