Im starting to have a problem with my 45 gallon reef tank, it is starting to get red slime algae on my rock. i have cut my lighting schedule down, i do weekly water changes and i scrub my rock every time i change the water. I am starting to think it could be all the hermit crabs i add to my tank. i have a toby puffer fish which is a real pain in the butt but i just love him to much to get rid of him. he puts a real dent on my CUC and i am starting to think that with all the hermit crabs he kills, their has to be so many just rotting in the tank since this tank has been up almost 8 months already. I have seen some people on here talk about not even having a CUC in their tanks. i was wondering if i could go that route or just eliminate the hermit crabs and get 3 emerald crabs as my CUC because he doesn't really go after anything that is that much bigger then him. like my turbos he trys to nip at them but thats about it doesn't pursue them or anything just ignores them i figured he would do the same if i got a pretty large emerald crab what do you guys think? Sorry for the long post lol