About to fill my tank & fuge to start "cycle" No sand, no rock, just equipment.. Not adding salt yet either.. 50gal corner display 10gal fuge Ok questions: is there a time limit on water to reef (Staying fresh, etc..) What should my flow in the refugium be?? I'm running duel hob overflows made of half inch pvc.. from the info on the youtube video I watched to make them, I should get 90gph from one.. I might make the jump to 1" pvc for 375gph, but don't want to have the fuge flow too high I'm not too sure when I will add salt, live rock, & live sand, but i want to make sure all the mechanicals are up to par.. Thanks!!