Hi community:
I am new reefer and I am seeking your advice.
My tank is very big. The volume is about 350L for display tank and 160L for sump tank respectively.
Although I have RO water filter, the water output is too slow. it will take a few days to produce the amount of RO water I need.
I am thinking is it possible to start water cycling with tap water? Has anybody tried that with good result?