What is a fully synthetic breeding program…?Yes failed treatments do occur re-introductions do occur however there are cases where everything was followed and documented and ich has still broken out months and years after the addition and the last inhabitants were introduced. If this happens on a semi regular basis to good practitioners and reefers what makes you think BIOTA facilities are any less susceptible to these failures hence why the only way you can eliminate it is by eliminating the parent fish and having fully synthetic breeding programs with completely sterile equipment.