Hi,im Hans,new to these forums,i have a 35 g fowler tank thats almost a year old,lots of live rock,3 percula clowns,2 yellow wrass,s,3 snails,5-7 blue legged hermit crabs. all paremeters"ph ect."are fine and have been for a long time.i had red alge all over all my rock for some time,now i...