While I'm not 100% sure, I popped my Albino male around 15 days ago and he had regenerated his sperm plugs as of yesterday. I actually think they probably regenerate faster than that (or not).

I'll start counting for how many days it takes him this time. I'll also try the experiment with my Super Pastel and Normal male. Seeing as I'm only breeding my Black Pastel this year.

I'd like to know for myself.