Hi, I have a good amount of freshwater experience and limited saltwater experience. I had a bunch of freshwater tanks a few years back in middle school and one small 29 gallon reef tank that was somewhat successful. I've been out of the hobby for a few years now and just got a 180 gallon tank with stand of Cregslist for 200 dollars that I resealed, and he also threw in a 54 gallon bowfront that I sold for 50 bucks. I also got a 65 gallon 36x18x25 tank new at PetSmart for Christmas with stand it only cost 150 new(I really wanted a 120 4x2x2 but my dad didn't want another big tank in the house). So far I have a 300 watt hydor heater for the 65 gallon SW, a hydor slim skim protein skimmer rated for up to 65 gallons which was the cheapest skimmer I found with decent reviews (I know it's better to get more than the rating but it was cheap and I was in a budget and I can always add a second one later on). For lighting I went with 2 165 watt eBay LEDs that are supposedly geat for growing coral. I have no filter (I am hoping the live rock will be enough) and no sump. Could I get away with no filter or sump and just live rock? I heard filters in reef tanks are nitrate factorys and I don't want to drill my tank and the tank is up against a wall near a doorway and a hob sump thing would make the tank stick out too much. I could possibly get a canister filter if it's absolutely necessary for a healthy reef tank. I'm picking up 50 lbs of live rock and 40 or so lbs of sand on Monday for 50 Buck's if everything goes as planned. He sys the rock is still live and in a bucket but I may end up buying a peice of good live rock at my lfs to seed the rest of the live rock just in case the beneficial bacteria died while his rock was in the buckets. So after I get live rock how long do I have to wait to get fish? I know with fw you have to let the tank cycle first but I was hoping adding live rock would jump start the cycle. Also when I add fish I'm probably going to get a clownfish or 2 first beacause I would think they would be a more hardy SW fish and there cheap. For the rest of the stock I was thinking some type of small wrasse, a small tang(I know most tangs get far too large for a 65 gallon tank but I was thinking maybe a toimini tang which gets much smaller than most tangs would work) I'm undecided on getting a dwarf angel beacause I know they can eat coral and getting one is a gambel but they do look pretty cool. Not sure yet what I'm doing for the rest of the stock yet and I'm open to suggestions. So would my tank work with no filter, and would a small tang be OK??? And if you have any advice for my tank I'm open to suggestions/information that might be useful.