Routine flush with disinfectant, fungicide, virucide, algaecide…

[Jim S]

I’m back into orchids after a 40 year absence, and have been growing again for three years. All orchids are thriving, no disease, bugs or significant snow mold or algae – I want to keep it that way.

Does anyone do routine flushes with things like Physan 20? If so, how often, and is your “flush” mixture diluted when compared to a “treatment” mixture?

Thanks