I've tried to get some feedback on this tank in generalist forums, but what is needed is a supporting cast of catfish, so your expertise is appreciated.

Currently this tank has 6 young Festivums (Mesonauta festivus) that I am trying to get a breeding pair out of. As they pair off, I will be moving them into 25 gallon breeding tanks, leaving the rest behind. This is a 55 gallon tank. Playsand substrate with some laterite mixed in. Planted with Hygrophilia and Hydrocotyle sp. as nitrate sponges. Temp is around 79 (26 C). Filtered with 2 stacks of 3 Hydrosponge 1 filters. Haven't checked the PH, but it generally settles around 6.8. GH is low (2 to 3), KH moderate to high (12-15). Lighting is a Walmart shop light (10 bucks. Can't beat it with a stick), with 2x40w T-8s at 6500K. Big hunk of driftwood dead center, 6" clay flowerpots (5 of them) scattered about. (I don't think the AGA is going to have a lot of use for this tank.

I am looking for a cleanup crew (and yes, I will target feed for optimum health as well). Somebody to catch what falls to the bottom, and somebody to take care of any algae issues that might arise. Preferably from South America. Even better from Peru.
So, for my cleanup crew, I have been leaning toward or (6 or so of either), though, , or one of the sp. (3 or so) have crossed my mind.
For algae patrol, I was thinking whatever species I could lay hands on, but the articles here warn off keeping them with cichlids (apparently a swearword here. Who knew?). On the other hand, there have been some recent articles in TFH regarding a fellow who has been keeping s with juruparis, so I am not discarding the idea out of hand. On the gripping hand, I have , Clown Pleco (), , and Albino Ancistrus already, so I am trying not to duplicate (though down the road I want to take a crack at breeding Clown Plecos, so that's a forward thinking possibility.)
Any advice is welcome.