Dosing Pump Question

[Travis Stewart]

Just hooked up my first dosing pump. Less expensive pump as I will only be dosing small amounts. I calibrated and set up different dosing intervals. I have noticed the airline tubing emptying back into the bottle after it doses. Is this normal?

 

[hybridazn]

You want the fluid to stay in the tubes, otherwise the amount dosed will be incorrect. You will need to either move the containers closer to the pump or add check valves to the lines going to the pump

 

[Travis Stewart]

You want the fluid to stay in the tubes, otherwise the amount dosed will be incorrect. You will need to either move the containers closer to the pump or add check valves to the lines going to the pump

Thank you for your reply. I have the bottles less than 8 inches away from pump..

 

[Travis Stewart]

Here is a pic

 

[reefwiser]

You need to install check valves and no not all dosing pumps do this. I have installed container 10 feet from where the the outlet line discharges into the tank without this happening.

 

[Travis Stewart]

You need to install check valves and no not all dosing pumps do this. I have installed container 10 feet from where the the outlet line discharges into the tank without this happening.

So it's just dependent on the pump? Can you please let me know where I would go about getting check valves that would fit airline tubing?

 

[reefwiser]

Fish Tank Aquarium Red Clear Plastic Air Pump Check Valves 5 Pcs https://www.amazon.com/dp/B00977J508/ref=cm_sw_r_cp_api_4V7GybGDQZX35

 

[Travis Stewart]

Fish Tank Aquarium Red Clear Plastic Air Pump Check Valves 5 Pcs https://www.amazon.com/dp/B00977J508/ref=cm_sw_r_cp_api_4V7GybGDQZX35

What side of the pump do you run this on?

 

[Travis Stewart]

You need to install check valves and no not all dosing pumps do this. I have installed container 10 feet from where the the outlet line discharges into the tank without this happening.

Do you have any suggestion where to put these check valves? Which side of the pump do they go on?

 

[hybridazn]

The check valves need to go on the inlet tube.

 

[reefwiser]

I put my check valves on the outlet side as I do not want solutions to drain backwards into the container. My current tank is a IM 40 so I am pumping solutions up and into the aquarium. So I want to keep the lines full of liquid I install check valves to keep the out up lines full.

 

[dstienmann]

Id look at the heads sounds like it has an air leak, if its draining back into the containers

 

[justingraham]

So can the outlet line not have fluid in it?

 

[reefwiser]

Generally I have fluid in my dosing lines. Other wise the amount of fluid deliver would change by the the length of the line going to where you are dosing

 

[Travis Stewart]

I actually got new air line tubing. I heard the clear kind you buy has small holes in it and allows air in which doesn't allow the liquid to stay inside the tubing

 

[justingraham]

I ask because I just got a new doser and all the liquid was out of the tubes after I calibrated it so I tried to put ten ml out and only five came out

 

[Travis Stewart]

I ask because I just got a new doser and all the liquid was out of the tubes after I calibrated it so I tried to put ten ml out and only five came out

Get black tubing

 

[justingraham]

How u see thru black tubing? Sorry just new to dosing

 

[Travis Stewart]

You can't but you will learn to trust it when you watch a few doses. Just run the line until it starts to drip then it is ready to go

 

[jsker]

White silicone tubing link. works great.