alage

over feed your tank

Most of your macro algae will do just fine in a tank.  The only issue will be which of your tank mates will find them delectably.  I had an emerald crab that will consume enough of it that it would not grow in my refugium.  Unfortunately or fortunately, it died so I now have it growing.  Aside from that if you use tap water for your top off it will supply some of the nutrients they want.  If you want to help enhance their growth there are several products out there that can assist with that.  On my mangal I use an iron & manganese supplement.  Also with the various macro algae available it is important to keep them trimmed and such in case one goes sexual and dies.

I grow Ulva, Gracillaria Hagi, and Red Agar.  I have an extremely difficult time growing Ulva in my tank simply because EVERYTHING eats it.  Crabs, snails, down to little pods...not to mention my fish.  It just does not grow fast enough.  The red Agar is almost that bad, but thankfully it grows quickly slightly faster than everything eating it.  Hagi is somewhat calcerous, so not much eats it (but some larger fish will).