Paphiopedilum watering in SH

[SADE2020]

I have a dilemma, I have a dozen Paphiopedilum in SH that I can't irrigate with RO at the moment...

These are the facts:

• It is so hot (35º-95º) that I have to water twice daily with the hose and then fill the reservoir with normal water, lowering the PH with acid.
• I don't have salt deposits because I water so much that the water runs all the time through the lecca.
• This has been going on for the past 45 days.
• The outdoor collection (Catts, Paphs, Dends, Phals, Neos, etc) seems to enjoy the summer and the excessive heat with the current irrigation.

But, how much damage could this cause to the Paphiopedilums that have been watered with RO most of the time before?

I don't want to test and deal with water chemistry, I just want to understand if this can go on for at least 1 more month or so without killing the Paphiopedilum ...

Thanks all!!