Ok to start I trashed my Tank. not a good way to start. i have had This 40 Gallon breeder for about 15 months. i was running a large can filter hang on skimmer and using tape water. every thing seemed to be fine. some soft coral and fish. corals were going great and then Boom Brown algae and the coral is very unhappy. So now i started to put out the Fire. bought some test kits found my NO3 was at 40ppm. at that point i took out the can filter and replaced with a sump. i did 7 10gallon water changed to not shock the fish with a sudden drop in nitrates. after that i removed all the rock and got all the build up out of the tank. after a week i did a 50% water change. i installed a GFO and Carbon reactors and now running filter socks that i change out every two days to catch as much crap and remove it. i am running a skimmer for a 150 gallon tank. now i am doing 10% water changes every week all with RODI water and reef crystals salt. I have tested for Ph calcium n03 KH and i right where they should be but my phosphates are still .25 i have been running the GFO for 3 weeks and i just changed it out and i still have brown Algae no other algae. i have used the flow in my tank with Tunze power heads on a wave maker to increase the flow and make it more random. just not sure what else to do other than wait. and i am pretty sure that is the answer but i just want to make sure any ideas.