These used to be called Miltonia and many tags still just say Miltonia instead of Miltoniopsis.
Your plant looks good in the pictures you shared.
If the yellowing is happening in the oldest pb, then it is normal. Pb that are over two years old will often shed their leaves and go bare.
I think it looks OK top, bit since i took it home And repotted, it did nthing other than losing those two leaves...same with the zygo..
In just worried that it has slugs,snails and who knows what else in its thin roots! When I repotted it I tried to clean t from tiny snails but clearly some survived...
Just worried that I'm gonna be left with no roots if they keep feeding on them!
Oldest leaf or a couple of them turning yellow is fine.
It has nothing to do with the snails eating the roots unless there are millions of them eating all the roots. lol
Since you said you cleaned the roots and the old mix is gone, I believe you got rid of majority of them.
Try to use rather open mix and aim for more frequent watering or soaking for a long time to discourage these snails.
I find that helpful.
When the orchid gods, whoever they may be, change nomenclature from Miltonia to Miltionopsis or vice versa, how are we poor beginners to keep up.
I love the really pansy-faced ones, some are more than others, but I am never sure which ones to buy.
Nychidman, thanks that's reassuring!! A third leaf is turning yellow but not from among the new growth, so let's hope for the best!!
Jungeoma, yes it is confusing for beginners like us...I bought it 'taking a chance'! But apparently most orchids in stores named 'miltonia' are miltoniopsis I've heard...! Not sure if there are any clear characteristics that can tell us what they are when not in bloom ,maybe someone can shed some light
Iray, there is a you-tube video by Orchid Girl, she tries to clarify the difference. I believe she lives in Germany. I happened upon it when I googeld Miltonia vs Miltoniopsis. But when I googeld the two individually, one looked very much like the other. Go figure!
Iray, I checked afterwards with my orchid Vendor Welcome to Orchids By Hausermann On-Line Orchid catalog.
and the plants there looked like the ones Dany was explaining.
(Disclaimer: I merely used that Co.for comparison purpose and in no way endorse them.)