"[HOG1] is working incredible well. Went from constant algae outbreaks (3-4 per year), to no algae at all. 10 yr old 250 gal reef tank, started developing blooms at year 7. Nothing else worked, even breakdown and rebuilds." -- Joe Lopez

"Everything is working great, got two of them [HOG1, HOG1x] on my system" -- Kenneth Salomon