2nd question increase water volume
The DT would be 500 Gallon the Sump/Fuge set up would add another 300Gallon to the system.
Now I would like to connect 2 large water (200gallon) storage tanks to the system which would help me doing my water changes emptying them and filling them up with fresh ocean water every 2 weeks.
The tanks I am talking about look like this
they both will be connected to my system again to increase water volume and with a switch of a button I can empty them and refill.
The question now is could storing water in dark tanks bad or it would have no effect at all to the water quality. Water pumps will be installed in the tank to provide constant water movement though just no lighting at all.