my tank is really a restart . loss all my fish when NYC loss power from a storm . my skimmer failed me a few months before but because i only had fish so never got a new one. now with my restart i have one green chromis, 2 one plop hammer and a clean up crow of 50 hermit crabs, 70 mix snails, 2 conch, 2 starfish. the tank is 125 gallon and a 20 gallon sump.can i just add 4 fags before i get my skimmer. i don't believe i will be getting any fish till spring 2021.