Hi there,
I don't think its possible that you just "skipped" your cycle....I would say if you add more fish it will affect the bioload and you will end up like i did....BIO-OVERLOAD. I would make REALLY sure first that you are complete with your cycle. Make sure all your Amm, Nit, & Nitrates have risen and fallen back to zero or else if you add more fish you will get spikes an then Uh -oh, you'll end up like I did having to buy an emergency 10 gal tank (Temp tank) while i just let the Bacteria grow and RE-cycle in my 20 gal tank. Because I did too much too soon, I ended up losing a Coral Beauty, 2 small Clowns, and a Blenny.....Thank Goodness I caught up with everything and I am much more patient now. My 2 Mustang seahorses are back in the 20 gal tank and I did add some clean up crew but for now, only the 2 ponies will be residing for awhile...I will make sure I don't overload again@! GOOD LUCK..MarSea