Small pleco's, I could hook you up with adult Colombian zebra/L129 (~3") and/or a juvie BN or two (~1.5"). The BN's are great for algae control, while the L129's are good for general leftover food from the other fish as well. Planetcatfish lists the L129's as being omnivorous, preferring meatier foods like bloodworms or pellets, not great on algae. However, I recently got 6 of them and dropped them into a heavily overgrown 38. The 3 juvie BN's in that tank hadn't been making much progress on clearing the glass, but 2 days after the L129's were dropped in it was spotless. Possibly because they were hungry after being bagged and shipped for a few days, but I was quite surprised in any case.
