Refugium questions/help

[Beano1169]

I have a small 2.7 gallon pico, its been going strong for like 25 days now. Diatom bloom is in full spread but the Cuc take care of that. My issue is I am recieving some frags today and will be cleaning my filter out abit before they show up. I am curious if I take out my "feather caulerpa"(which shouldnt be there anyways was told it was macro algae) will I have any spiking in the tank seeing as how they are a nitrite and nitrate soak?

The filter is a Aquaclear 30 fuge mod, with ac foam, 100ml purigen bag, LR chunks not really rubble, and that feather nonsense. I'm worried if I remove the caulerpa my tank will spike and murder my frags