Autodosing ferts in return line feed from filter?? - The Planted Tank Forum
 
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post #1 of 4 (permalink) Old 12-23-2009, 08:26 PM Thread Starter
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Location: Greenville,MI
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Question Autodosing ferts in return line feed from filter??

I currently use the water pump method of autodosing my ferts(wasserpests). Timer kicks on the pump, pump pushes ferts from a container up, drops it into the tank.

What I want to know is if I can just put it in line with my filters return hose. I just redid my plumbing using 3/4" PVC instead of the normal flex hose. So, I thought, why could I not just do the same thing that I do with my CO2 reactor(rex style). Just insert the hose/fitting into a section of the PVC return, with a check valve. Timer kicks on the pump, ferts pushed into the return feed.

Anyone have this going? Will it work? Thought it may be easier/more streamlined.

Thanks for the responses.
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post #2 of 4 (permalink) Old 12-23-2009, 08:38 PM
GTR
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Depends on the pump and if it can handle the pressure.
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post #3 of 4 (permalink) Old 12-23-2009, 11:23 PM
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A regular little water pump will not create enough pressure to open a checkvalve and work against the pressure of a canister filter.

Might work with a peristaltic pump, if that's what you are using to dose.
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post #4 of 4 (permalink) Old 12-28-2009, 09:32 PM Thread Starter
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Nope, currently I am using a pond pump from lowes, as I had to defeat about a 6 ft head so I needed something with a bit of force. But it sounds like it would not have enough to get past the canister pressure. So, sounds like it would not work. Bummer. Just trying to hide some more stuff and also make it a bit more contained.

Thanks for the feedback.
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