ill get to the ich. but, to stay on topic...great stand! came together real nice like. lol as for the "unknown parasite"...its not unknown, its ICH! do a bit of research, but icy is a parasite. and it will live in your system for up to 4-6 weeks. and the only way to treat it is with copper(definite NOno if you want to keep a reef tank) or let it go fallow and wait it out.
many have struggled with the same issue, you are not alone, patience is a virtue. when i first started out i had a tank crash due to a faulty heater. cold tank for 2 nights=lots of stress=ICH. i watched as one buy one all my fish died. sail fin tang first, then the clowns, then the mandarin. but, its a real learning experience, and nothing in this hobby comes fast. so, i left my tank fish less for about two months or more. meanwhile, collecting corals, and doing extensive research on the fish that i want!!(this part really helps).
so, hope that helps. patience and more patience. have fun, keep reefing!!