Pretty Fancy Fish

Hi all, I'm currently trying to get my LDA01's to breed and it's becoming very painful :-? . I have gone through a dry season where the Ph was 6.4 and the TDS was around 400ppm with a temp of 29deg. I have now water changed daily for over the last three weeks, I have moved the TDS to 110ppm, ph 6.6 and the temp is now around 27deg, the temp of the water I'm changing with is about 20deg. I have added a power head and feeding them cucumber, brine shrimp and wafers. If anyone has any ideas please feel free to help . Thanks Dale plecoforum.com