I poured it.
Yes, oxidation risk. Chuck in a crushed Campden and pray to Bacchus.
I have used a syphon with a bit of muslin over the inlet for something else, might work for your peach. At the time I didn't think of it for my peach, and there's so much gunk it could easily clog anyway.
I topped up with 8oz sugar dissolved in 1.25litres of water. It fermented another week or so, then took a bit more than that again to clear.
Slight bitter edge when new, quite nice now IIRC. Might open one tomorrow to check...