ok guys i need your help I've had my tank for about 3 years now everything is doing well I keep up with my water changes the way I was taught was to put a mark on display tank that marks 15 or 20 gallons depends which one I wanna do I just marked it so I know. Now before I even start draining water from the tank for the water change I go in the sump and turn off the return pump through apex and twist off the valve for the return pump and the one on the side as well that stops the water from the display tank to go into the sump. Then i add the water into the display tank and when the 15 minutes is up the apex turns back on the return pump and skimmer I then have to turn the valve back on for the return pump and the one on the side that will let the water fall back in the sump I recently noticed that the return valve is leaking. It is not leaking now but when I do a water change it starts to leak. How do you guys do your water change? Have I been doing it correct? Any tips? Is there a way that I don't have to touch the valve in the sump because I do my water change through the display.


