question on your sump light. Is it better to run the kessil you are using instead of just any ordinary light you would use in an garage? The reason I ask is that Ive been running an ordinary light for my sump and cant keep chaeto at all
Before purchasing a new light, you might want to try dosing a little iron and see if that helps. Iron gets depleted quickly when running a refugium. It could be what is limiting your growth.