Hello all. My question is regarding algae eaters. I have a 29g freshwater goldfish tank. 0 ammonia, 0 nitrites, nitrates < 20ppm, temp between 74-75 degrees F. I'm having a really hard time keeping the common plecos alive in my tank. I'd like to try to keep some type of algae eater in the tank to help keep some of the algae film off the glass. Any recommendations would be great! Thanks!