:oops: My husband and I have set up what we hoped would be a lovely reef aquarium. It has been running for about 6 months now. We maintain rasonable water quality (Po4=-, Amm.=0, No2=0, No3=10-12 ppm, pH 8.45-8.2/24hr, alk 3 meq/L, Ca 420-440, temp= 25.5C) Our system is 65 UK gal (~80 US gal)...