okay, then you'll need to keep an eye on the ammonia and nitrite as BN's can create a LOT of waste and when the filter in still in it's infancy it might cause you some problems.
Also, something for the future - once they reach full maturity (it'll take a couple of years) if they turn out to be two males they may fight. It may be that they turn out to be a male and a female - and until they start getting whiskers we won't know - it may be that they are a pair of females. Time will only tell.
I had two that were bought together and for a while I thought I had a male and a female as one didn't develop any whiskers until much later. It turned out I had two boys. It's only a few weeks since I had to re-home one in a fit of panic as one Sunday afternoon they decided they were going to turn my tank into a cage fight. It was horrible to watch.
My Dad had to come to my flat and take one home to his tank over night as it was obvious they had to be seperated. They'd torn my tank apart aswell and terrified the rest of my stock. In the morning I rang my lfs and they agreed to take him and re-home him as he was too big really for my Dad's 2ft tank.
Keep an eye on them (and your water as already mentioned) and if both grow tufts of whiskers then consider one will have to be re-homed - either into a seperate tank of your own or a friends perhaps.