Phal. Tetraspis Budblast

[jcec1]

I haven't experienced bud blast on my tetraspis, so can't say they are especially susceptible, it too is in an easterly window. I think your temperatures are ideal for it mine is kept at a maximum of 20C and does just fine. I think it might be that the sun is getting stronger and with it still quite low in the sky could have caused the bud blast - it may have also dried out a bit quicker with more sun on it. Since you have moved it I think you will have solved the problem.