Hey all, I just started cycling my 20 gallon tank about 4 days back with about 18 lbs of live rock and 20 lbs of live sand. My levels havent spiked yet so I will probably go get a raw shirmp to toss in there like I read around the forum. My question
is that I have something whiteish looking covering some parts of my live rock and not sure what it is. I dont think its a sponge so could it just be die off? Pics below... thanks!