sps coral nano reef update 05/29/2021

All blue spectrum video. All of the big colonys are growed from a frag. I lose some of them these years. My suggestion for a sps domain tank is alkananity stable. Because those I lost was due to alkananity spike. My tank is about 40g 60cm*60cm*50cm. I use natural sea water, so I keep my parameters as close as the sea water. Alkananity: dkh Ca: 400-405 ppm Mg: 1260-1320 ppm Potassium: 370-390 ppm NO3: undetectable -1.0 PO4: undetectable -