ok well this morning i found this red dot about 1cm in diameter, it looked like pink algea growth but it was on my power cord to my power head, this after noon i had a closer look and relised this dot had 4 legs (1 must of been chewed off) and was slowly creeping its way up the cord.its a dark red...how bad is this for my whole eco system now? is it gonna start chewing on my live rock which have alreaddy taken a month to start growing or what?