Amphipods issue

[1986CJ7]

With a little disbelief to what has happened so far I am asking for a little advice. Since I've sold the livestock (kept only the clownfish) I had an explosion of amphipods in the cube and to my surprise they've started eating the zoas.

First the gorilla nipples, they cleaned up half the stone, at first I thought it's the low light or that I damaged some of the polyps in the many moves, but then after a couple of days of putting the gorilla nipples into a more lighted location, to my surprise, I saw the Sunny Ds disappearing one after one. They've gone through 10 heads before I started monitoring and paying attention and most definitely there's a bunch of amphipods chopping down the Sunnys systematically one after one.

I went and bought two wrasses asap (6line and lemon) but I am a little bummed. I still have around 30 heads spread on the rock, but the stupid bugs almost cleaned up the original coral plug.

Opened for suggestions, what should I do?