In my opinion i would say forget it! You have a common plec hope its not int he 29gal tank! and if it is why! is it getting too big! Then the question is why buy them! Always buy fish you know you can accomadate and give them the things they need! Dnt buy them and then sell them or give them away because you thought they not get that big! That is wrong,it makes me angry to hear people say these things. And you say your plec is getting well big! How big is big? Do you know how big they can get? Do you know what foods they eat! THey do not just eat algae! WRong impression you have! ( my view only)
The clowns are classed as peacefull plec's they need a wood diet , will clean your 29 gal tank of algae in a few days!( they need algae tabs and other foods as well as bogwood) so if you plan to have these i would say get a bigger tank and get at least 4 of them! They are nite fish , but you will see them sometimes during the day! 25 gal is minimum size for as they get approx 3 inches, the mega clown gets about 4.5 inches and is an omnivore. ( minimum size for them is about 30 gal)
These plecs need lots of hiding places ( such as zebras,and other small Peckoltia ) and will get terroritory so the more you have the bigger tank you will need! They also need excellent filtration as they will produce lots of mess in the tank form thier food! they prefer warmer water around 80f mark again same as Peckoltia and zebra's. Hope some of this helps, i was gonna get 6 in my 4ft tank when it comes to my new flat!
Kinda freakin here cause my pleco is needing to be moving into my 29gal. tank soon. He's growing Growing GROWING really fast! 
I haven't had any bottom feeders/algae eaters in that tank before, and it was building up a month or two ago, so we put some of that stuff that gets rid of the algae. I keep checking the tank now since "Big guy" has been getting...well...big! 
I cant feel really any algae in the tank! There would be an ample supply of non-algae food for him to munch on at feeding time, but doesnt he need the algae?? 
Just wondering if anyone has any advice or experience with a similar situation. Can I buy something that will help it start to grow back? 
OH!!! 
Loves it in the new tank! And Ely the rubber eel hasnt bothered him at all! Im glad it worked out! B) 
I'll miss him, hes cool!
I have a 29 gal with 3 gouramis, 2 dwarf gouramis, 3 congo tetras, 3 rainbow bosamanis and a rubber eel (whom I am planning to upgrade to a tank he can properly fit when he gets bigger). Will it do my tank a lot of damage (if overcrowding hasnt already) to get 3 clown plecos? (After I sell my common one of course) I would think they would be a help to my tank as they would clean up some of the mess left by the other fishies! Before someone guts me for having so many fish in that size tank, 8) I keep it clean and all the levels (amonia, etc...) are good! Healthy healthy fish! Its not my fault I swear! My boyfriend kept bringing me fish and I couldnt say no! Finally got him to stop after the congo tetras!
