Hi AllI just received the following Dr. Tim products :1) Dr. Tim's Eco-Balance2) Dr. Tim's Waste Away3) Dr. Tim's Re-FreshI tried to remove the diatom and algae from my display tank using 3 dose of Dr. Tim's Re-Fresh (spread of 48 hrs between each dose w/ skimmer offline), but seems like the condition did not improve. Anyone can advise on this?Many thanksBest RegardsKoh