Coral Box Dosing Pump

dabears · Jul 10, 2019

Hi,
I`m at a lost, not sure what to do.
I have a coral box wi-fi doser, I recently had to replace the mother board, because of wi-fi failure. Everything seems to be working fine, all the heads calibrate perfectly. My problem is with the no. 2 head. I also swapped heads but to no avail. The problem is no. 2 is creating a back siphon to the point where the container gets totally full, the containers are below the tank surface line (no sump), and below the doser, I have replace all the check valves with upgraded ones, so i`m at a lost. your suggestions will be highly appreciated, thx.

Viking_Reefing · Jul 10, 2019

dabears said:
Hi,
I`m at a lost, not sure what to do.
I have a coral box wi-fi doser, I recently had to replace the mother board, because of wi-fi failure. Everything seems to be working fine, all the heads calibrate perfectly. My problem is with the no. 2 head. I also swapped heads but to no avail. The problem is no. 2 is creating a back siphon to the point where the container gets totally full, the containers are below the tank surface line (no sump), and below the doser, I have replace all the check valves with upgraded ones, so i`m at a lost. your suggestions will be highly appreciated, thx.

So the container and doser is below the point where you dose? If that’s the case there’s your problem.
Check valves should help but you will always risk a back siphon.

Is your dosing lines submerged? If so pull them up over the surface. That way you’re at least not risking flooding your floor.

dabears · Jul 10, 2019

MichaelE said:
So the container and doser is below the point where you dose? If that’s the case there’s your problem.
Check valves should help but you will always risk a back siphon.

Is your dosing lines submerged? If so pull them up over the surface. That way you’re at least not risking flooding your floor.

Yeah, the lines are about a 1/4 in below the surface, I did that so I wouldn`t get any air in the lines. So can ask what I should do .
thx

Viking_Reefing · Jul 10, 2019

dabears said:
Yeah, the lines are about a 1/4 in below the surface, I did that so I wouldn`t get any air in the lines. So can ask what I should do .
thx

Well, have the lines above the surface. Air in the lines is better than water on the floor.
If you can’t bring the dosing reservoir up I guess the only thing you can do is to get the best check valves possible.