Question about Bad Carbon leading to Algae
This is the read out on my tests concerning my reef, and I have narrowed down the problem yet need technical input on what is going on.
Ammonia: 0.024 ppm
Nitrates: 2.5 mg/L
Calcium: 400 ppm
Phosphates: 0.0 ppm
ph: 8.4 to 8.5
I was researching that Silica causes a protective coating on Brown Algae, and I did have some spots for about 5 days in my tank 29gal. That was normal, yet what followed was like a green dust algae growing at an enormous rate where within hours of cleaning the tank, the fish looked like they were in London after a rainy day in the morn. Add flourescent green to the fog and that is how bad it was.
I researched this because the water change that followed was drastic and almost lost all life in tank. God blessed this tank by my corals surviving a 35% water change. Dangerous but worked.
It was actually my fault, my RO-DI filtered water needed the polishing filter (carbon filter) changed. I was not paying attention that I decreased the 3 month change to 2 months since I was curing live rock in the basement and filling a new tank at same time. So the carbon was bad in the RO filter, hence bad fresh RO water. Tank filter working overtime, constantly changing that carbon filter, since starting out with silica laced water anyways.
Added another turbo snail, along with 30% water change, changed 250 gal maximum use Polishing Filter for RO system, changed carbon filter in tank, changed protein skimmer filter, added Algaefix by Aquarium Pharmaceuticals (5ml), and a prayer.
My question is did I make a bad choice along the way, and is my assumption correct?