Ravenhawk...your scooter blenny will compete w/ a mandarin for pods and unfortunatley, you do not have enough lr to sustain enough pods for a mandarin.
Even if you do have plenty of lr, a mandarin can wipe out your pods in a couple of weeks..I feed mine zoe/zoecon enriched brine..giving the pods a chance to "regroup"...and so far,so good.
HTH