Syringe dosing setup - The Planted Tank Forum
 
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post #1 of 15 (permalink) Old 12-03-2010, 03:40 PM Thread Starter
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Syringe dosing setup

I made a dosing setup for frend so i took a picture of it.
Red arrows represent orientation and flow of check valves. Lower check valve is needed only if end of hose will be under water.
So, my frend only needs to pull-push piston of syringe, check valves made sure that flow is in right direction
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post #2 of 15 (permalink) Old 12-03-2010, 03:55 PM
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Would you mind explaining the purpose of this a little? What are you dosing?
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post #3 of 15 (permalink) Old 12-03-2010, 04:07 PM Thread Starter
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Originally Posted by EntoCraig View Post
Would you mind explaining the purpose of this a little? What are you dosing?
Liquid inside bottle are macroelements but can be whatever you need to dose. Setup is used as step above of what you do when you have to take syringe and bottle out, open bottle , put syringe in bottle and pull, lift canopy...etc.
In this way, syringe can be put on some easily reachable place (eg. behind aquarium) and to dose you just need to pull/push piston.
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post #4 of 15 (permalink) Old 12-03-2010, 04:10 PM
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So the syringe is used to measure the amount of nutrients in a premixed solution correct?
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post #5 of 15 (permalink) Old 12-03-2010, 04:14 PM Thread Starter
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So the syringe is used to measure the amount of nutrients in a premixed solution correct?
Not sure i understand your saying but syringe is used for dosing right amount of liquid
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post #6 of 15 (permalink) Old 12-03-2010, 04:24 PM
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Yeah that is what I was saying

Very creative. Well done
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post #7 of 15 (permalink) Old 12-03-2010, 04:33 PM Thread Starter
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Yeah that is what I was saying

Very creative. Well done
Tnx

One detail, bottle must be lower than aquarium because liquid can free flow out (as seen on picture) if the bottle is higher than end of hose
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post #8 of 15 (permalink) Old 12-03-2010, 04:58 PM
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The bottle isn't airtight right?
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post #9 of 15 (permalink) Old 12-03-2010, 05:03 PM Thread Starter
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The bottle isn't airtight right?
No, its not. Theres really no need to be
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post #10 of 15 (permalink) Old 12-03-2010, 05:04 PM
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you could also use a mechanical timer connected to the end of the syringe to make it an automatic doser.
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post #11 of 15 (permalink) Old 12-03-2010, 05:17 PM Thread Starter
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you could also use a mechanical timer connected to the end of the syringe to make it an automatic doser.
Yes, ive seen that versions of autodosers but i think that force needed to push/pull piston is too much for mechanical timers and its plastic cogs
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post #12 of 15 (permalink) Old 12-03-2010, 05:33 PM
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Nice. Has your peristaltic pump arrived yet?

Does it take a lot of force to push and pull liquids through the check valve?


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post #13 of 15 (permalink) Old 12-03-2010, 05:44 PM Thread Starter
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Nice. Has your peristaltic pump arrived yet?
I checked my existing peristaltic pump and it wont rotate anticlockwise (snif, snif...) so ill just have to buy another one for dosing micro. But, i think idea is still good and if pump is rotatable in both directions that can be used like in my setup.
I guess i could find a both directions rotatable motor (like in some inkjet printers) and change it on pump but its too much work, pumps are about 30$ with shipping...

Quote:
Does it take a lot of force to push and pull liquids through the check valve?
No, not at all, i didnt notice much difference (with and without valves)
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post #14 of 15 (permalink) Old 12-03-2010, 07:04 PM
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Very clever. I think I'll copy your work for my planted tank. I'm tired of using a half teaspoon to measure out my PMDD fertilizer solution on a daily basis.

Tom
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post #15 of 15 (permalink) Old 12-06-2010, 04:02 AM
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possibly the simplest piston pump i have ever seen good job
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