My dosing pumps keep getting air bubbles. Should I put drip underwater?

[shollis2814]

I know part of my problem is my pump. It's a Jebao that is not known for accuracy (but it is precise).

I am dosing Red SEA A, B, and C liquid.
No matter how well I bleed the lines, I get air bubbles in the output tubing every few days. I suspect that the air is just slowly traveling up the drip line.

Should I cut longer air tubing to put the tip of the dosing tube under the water level of my sump? Will that cause diffusion problems? When it works correctly, my corals are growing and happy.

Thanks for any help.

 

[clm65]

I've seen people put air line check valves at the discharge of the dosing lines, I assume for this reason.

 

[Hemmdog]

I know part of my problem is my pump. It's a Jebao that is not known for accuracy (but it is precise).

I am dosing Red SEA A, B, and C liquid.
No matter how well I bleed the lines, I get air bubbles in the output tubing every few days. I suspect that the air is just slowly traveling up the drip line.

Should I cut longer air tubing to put the tip of the dosing tube under the water level of my sump? Will that cause diffusion problems? When it works correctly, my corals are growing and happy.

Thanks for any help.

It might cause a back siphon if the pump is allowing air in, I’d be weary of putting the line underwater.

 

[serwobow]

I would not do this, because the air bubble indicates a possible incomplete seal at the pump. If you submerge the tube, you risk creating a siphon. This could either siphon your aquarium into your dosing mix or your dosing mix into your aquarium.