I moved the Discus mates and twice she has laid eggs and they weren't fertilized and all were eaten. The tank is 29 gallons with sponge filter, heater, and fake plant: all parameters are ok though ph is somewhat higher. I am considering a new 38 gallon tank with a more natural setting like my 55 gal tank which has gravel and live plants etc. I just don't want to much gravel. The pair don't seem to be to comfortable either they have been in the new tank five weeks. Any ideas? 