Yes I know sour crop can be a nightmare. I'll give the back story in case it will help anyone else with a similar issue. Get the coffee out and brace yourselves for an essay

So this lady presented with a full crop of liquid and a hard, swollen abdomen. I treated the sour crop at home for 5 days with kefir, garlic water, probiotic and added in Nystatin on days 3-5 and no joy. So I began to suspect a tumour/ blockage further on or possible repro infection. So up she went to the exotic vet. They attempted to aspirate her stomach to check for ascites but thankfully no fluid came out. Over the stay she was looked after by 3 different vets, all of whom gave her an internal and all 3 said they could find no lumps, bumps tumours or blockages from that end. She ended up there for a total of 6 nights on Amoxiclav, Flagyl, Meloxicam and Emeprid (all via injection) and had 2-3 crop flushes a day. There was bits of grass coming up in the flush but not the amount they were expecting. Abdomen softened and went back to normal on the antibiotics, so repro infection suspected there. On day 3 they were to do a crop op to access the gizzard for suspected grass impaction in proventriculus or gizzard but operating vet was sick, so op was delayed by 2 days. Once the vet could do the op a couple of days later, a partial grass impaction of gizzard was found (half a handful of grass she says) but not the amount expected for your typical grass impaction. So sour crop, repro infection and partial grass impaction of gizzard were the issues with this lady according to the senior exotic vet who operated. Just to mention also, she had an implant in December which is about to wear off any day now. So anyway, she was cleared to return home with oral antibiotics and anti-inflammatories after the op, so home she came. But after 2 days crop started backing up with fluid again and I had no choice but to take her off the meds because nothing was getting through either way and I wondered if the antibiotic were behind the re-emergence of the sour crop. So a day off the antibiotics and her crop was emptying again but stomach was beginning to harden and she was in sh*t form. So was in a catch 22 because if I gave her the antibiotic her crop would likely fill up again but if I didn't the repro infection would worsen. Hence original post looking for recommendations on anti-fungal other than Nystatin. So had to come up with a way to treat everything without antibiotics. So currently giving her oil of oregano (not the EO) and pure, stabilised allicin to treat the repro infection and she's getting kefir, garlic water, probiotic with some digestive enzymes all mixed together 4 times daily to treat the yeast. She hanging in there, today is day 3 of the new regimen and she looking brighter. Crop is emptying again and abdomen has softened but we've a ways to go yet. Might copy and paste this as and create a separate post in the event it will help others in the same boat. Thanks anyway ladies, send us on all the positive vibes, we gonna need it