It's great when a plan comes together.
Does it really matter if you mix even 20% fresh with old and discard it ( except for waste ) we are talking an automatic w/c system here. Besides it's probably better for the fish. I refer you to the 2 threads on water change that raged here on this forum a couple of weeks ago. Beware, if they know we're talking about water change ratio's they'll come back and bring their math with them...MATH !
Keep us posted. I'd like to know if you get the timing stable.
Does it really matter if you mix even 20% fresh with old and discard it ( except for waste ) we are talking an automatic w/c system here. Besides it's probably better for the fish. I refer you to the 2 threads on water change that raged here on this forum a couple of weeks ago. Beware, if they know we're talking about water change ratio's they'll come back and bring their math with them...MATH !
Keep us posted. I'd like to know if you get the timing stable.