Welcome to AA!
I've actually been wondering this myself, but I just haven't gotten around to making a thread about it yet due to the holiday weekend and stuff. My apologies if it seems like I'm hijacking your thread, but I figured it would be best to include my almost identicle question within this thread rather than start an entirely new one. Hopefully we can both get our questions answered!
I introduced two fairly young (got them from a breeder) BN plecos to my 55 gallon planted tank a couple weeks ago to help with some algae and also because I think they're really cute looking. They seemed to clean up some of my algae that I had in my tank, but not all of it, although most of it was just due to insufficient/inconsistent amounts of CO2 in my tank because I didn't have pressurized CO2 until last week. They both seem to be healthy, fairly active during the day (well, as active as you can expect a pleco to be during the day), and usually all over the place at night when my LEDs come on, but I am unsure how to effectively feed algae wafers to them because any time I drop in an algae wafer, even if I just fed the rest of the fish right before, my loaches, mollies, and gouramis just attack it and continue munching away at it until there's nothing left of it, and I don't even think the plecos notice that it's there because they tend to hang out underneathe of driftwood or way in the back of my tank or under rocks and such. If I put it in at night when just my LEDs are lighting the tank, eventually the other fish find it and start picking away at it and by morning it is gone.
I can only assume that the plecos have been surviving on various food sources that I can't really see because they are still doing fine almost three weeks after being introduced to my tank, and one of them is growing pretty fast as well. I guess I've just never understood how to effectively feed a pleco since none that I've ever had seem to dart straight to food like other fish do when it enters a tank.
