Welcome to 3reef!!!
I don't think that they are daughter shrooms...I would need to see a picture. Mushrooms reproduce either by cel division(splitting in half) or by fusion(moving from one spot to another while leaving a small piece of itself behind, to become a daughter mushroom). They usually leave a good size of their foot behind about the size of a dime or so to. How high are your nitrates? Shrooms will absorb some nitrates through their epidermal layer. They require moderate lighting for vivid coloration and low water flow.
You may have something that is eating them.
How strong a lighting presentation are you using? When did you last do a water change? _________ 125gal.w/Mag9.5 return(dual megaflow)>Mag7 pump Aqua Cev180skimmer.Wave2k Hamilton Reefstar(2)250watthqi(mh)pend.a Yellow, Naso Tang Red Lip Blenny Percula Clown Demoiselles Niger Trigger F. Wrasses Ceriantharia Orn.Shrimp and Stars Hermits Queen Conch asst. snails> Stars Zoos shrooms Montipora Brains Gorgonians Favia Turbinaria(large+small polyp) Acropora Xenia Tridacna (CroceaMaximaSquamosa) Leathers <35+75gal.reef tank as well> 
"IF THE PHONE DOESN'T RING...IT'S ME"  jb  |