3:5:3 fertilizer and Phaleanopsis orchids in late fall

[LiveLaughGrowOrchids]

Hello everyone,

I've got a question on fertilizing. The first fertilizer I have is a 3:5:3. The recommended strength is 5 ml per liter and every two weeks. It's marketed as an orchid fertilizer.

Then I've got multifeed, which is for all kinds of plants, it's a19:8:16 and also contains magnesium, zinc, boron, molybdenum, iron manganese and copper.

The 3rd I've got us Seagro which is a fish based thing, 5:0,7:1.7 (53g/kg, 7g/kg,17g/kg) and also contains calcium, magnesium, manganese, iron, copper, zinc and boron.

I've read that you shouldn't fertilize after repot. I've fertilized with nr 1 today, after repotting 2 of my Phals about 5 days ago, and one about 2 weeks ago.

My question is, have I done them any harm?
Should I be fertilizing now, it's late fall,next month will be winter and temps are already dropping.

And also which of the above fertilizers would be best to use, and should I be diluting is further than manufacturing recommendations?

Thanks all!