yoyo a no go...
It's pretty difficult to make sure that one fish eats one kind of food and another fish eats another. Loaches do not require a special diet - a high quality pellet like NLS is the best food for them, and any other community fish you may keep them with.
I agree, they should be in at least a 4 foot tank.
125 - BGK, pictus cats, silver dollars, kissing gouramis, palmas bichir, delhezi bichir
125 - Red severum, bolivian rams, Turquoise rainbows, irian red rainbows, loaches (angelicus, zebra, kuhli and horseface), plecos (BN, RL and clown), denison barbs, pearl gouramis
90 - Congo tetras, african knife, elephant nose, spotted ctenopoma, upside down cats
QTs - 29, 20H, 20L, 10