I’ve been MIA for a while. However, i have been using the concoction since i visited Allan a while back. I seen great results overall. Nothing like CRT though, his coral growth is exponential compared to what I have been able to achieve. I have been growing SPS for over 10 years and have never had good growth. I still don’t, however I had some that haven’t grown in months/years start taking off after concoction was used. More importantly i have not gotten cyano on a regular basis and colors have been better than usual. But the spring time got me again. Every spring time here in Chicagoland I have corals kick the bucket and or STN slowly. Lost one this year that has been growing like a champ for 7 years. It’s every year, same time of year. Drives me crazy just waiting to see what I’m going to lose. Oddly enough as some die others sprout like never before. I have a confetti that has been at a standstill since the dinosaurs roamed the earth. It’s now growing like mad as the Walt D next to it pales and is on the verge of death.