Small pump with threaded ports? - The Planted Tank Forum
 
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post #1 of 3 (permalink) Old 07-24-2017, 04:26 PM Thread Starter
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Small pump with threaded ports?

I want to move my heater out of my 20H to underneath in the stand (don't want to do a HOB diy heater). I'm a little worried that adding an inline heater to an Eheim 2213, which already has a Griggs-style co2 reactor on the output would reduce the flow too much and affect the filtration/water movement.

Is there a small external pump suitable for a 20H that :
1) has a workable head height around 4' (stand is 30", plus the tank is 18")
2) has threaded ports (to attach a barb to)
3) not so much flow that it will turn a 20H into a whirlpool.

I was looking at something like a https://www.amazon.com/EcoPlus-Adjus.../dp/B00FH9L3QE or the next one up?

Another option could be to combine the reactor and heater on a separate pump (like the one above or the next one up), and take advantage of the head loss to reduce the flow, freeing up the 2213?
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post #2 of 3 (permalink) Old 07-25-2017, 03:02 AM
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i would definitely recommend putting reactor and heater on a dedicated pump. i'm not sure the one you linked to has a threaded intake. i use a maxijet 900.

Last edited by milesm; 07-25-2017 at 03:35 AM. Reason: put in maxijet
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post #3 of 3 (permalink) Old 08-01-2017, 09:46 PM
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Have you considered putting a Y on the output hose from the Ehiem filter. Use one side of the Y for the heater and the other side for the CO2 reactor? Then run the outputs of both the reactor and heater into your tank.

Instead of adding head pressure and decreasing flow you would be reducing head pressure and increasing flow. This would save you the cost of an extra pump and the cost of running the extra pump.
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