mpderksen
New member
Tank in the living room. New salt water in a barrel in garage. DOS unit mounted above the barrel. Pump #1 side is pumped up from barrel to DOS (maybe 4 feet?), then 30 feet to the tank. Pump #2 Water is pumped from tank, through 1/4' poly about 30 feet to DOS, then out about 15 feet of tubing to a drain.
Both sides have been calibrated. Pump #1 was 41 ml, pump #2 was only 25 ml.
During the Auto Water Change cycle, the heads are supposed to both pump 55 ml every 13 min. I put a graduated cylinder at the output, one at a time. I only get about 50 ml going in, but 40 ml going to the drain!
No wonder my SG rises over several weeks! I'm getting more in than out. My output is off by a full 31%!!!
I'm going to start from scratch, plug in some short tubing to the DOS, and see if it pumps what it's supposed to. If not, then HUH????? If so, then it's the length of plumbing, and then again, HUH????
I've run this AWC for a few years. Could it be time to change the tubing in the heads? I'm honestly lost how to even find the issue.
Both sides have been calibrated. Pump #1 was 41 ml, pump #2 was only 25 ml.
During the Auto Water Change cycle, the heads are supposed to both pump 55 ml every 13 min. I put a graduated cylinder at the output, one at a time. I only get about 50 ml going in, but 40 ml going to the drain!
No wonder my SG rises over several weeks! I'm getting more in than out. My output is off by a full 31%!!!
I'm going to start from scratch, plug in some short tubing to the DOS, and see if it pumps what it's supposed to. If not, then HUH????? If so, then it's the length of plumbing, and then again, HUH????
I've run this AWC for a few years. Could it be time to change the tubing in the heads? I'm honestly lost how to even find the issue.