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Cheap reliable auto doser?

bushaaayyy

Member
Joined
25 Dec 2020
Messages
72
Location
Warwick
Just been looking into auto dosers, and was surprised by how expensive they all seem. I was recently able to pick up auto feeder, that I could program via an app for about £15. Surely an auto doser is just the same technology with a peristaltic pump on?

I only need a single channel doser but can’t seem to find anything under £50, even on aliexpress.

Just wondered if anyone has any recommendations for a cheap or diy auto doser?
 

noodlesuk

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Joined
21 Jul 2020
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323
Location
Oxfordshire
I guess the autofeeder market is bigger than the auto doser market, slightly more precision required in components, maybe why the cost difference.

There is some DIY info on this thread <ReefPi>

The actual pump heads are £5-10 on eBay, but by the time you buy all the control parts, does add up. Then also takes a bit of time to get a nice interface going, but if you like to tinker, can be good fun.

Edit - If I were to build another, would probably use this add-on board, which would make it very easy, hardware wise <MotoZero>
 
Last edited:

ScareCrow

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Joined
28 Jan 2019
Messages
270
Location
South west
I found the same as noodlesuk. By the time I added up the cost of all the parts it was cheaper to buy an off the shelf doser.
They come up secondhand every now and again, so might be worth watching for a secondhand one.
 

Tom Delattre

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Joined
6 Oct 2020
Messages
52
Location
France, Avignon
I've bought two "Blau single dosing pump" for ~50€ eachon sale, but they're not that great. I've tested them 7 days, set on daily dosing, and their internal clock shifted around an hour.

Envoyé de mon KB2003 en utilisant Tapatalk
 

bushaaayyy

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Thread starter
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25 Dec 2020
Messages
72
Location
Warwick
Thanks for the advice, think i will stick to the manual dosing for now. Will keep my eye out for a second hand unit in the mean time
 

MrClockOff

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Joined
20 Aug 2020
Messages
115
Location
Bournemouth
Aquarium Dosing Pumps - Allpondsolutions I’m using this one (Jebao/Jecod DP-3) for almost a year. Not extremely precise on small doses but when I set it to 20ml dose it’s +/-1ml error. When dosing EI such error means nothing. Internal clock is off for about 10min a year which is excellent. I got it for £56 when it was on offer. But if you are lucky to find 2 channel in stock then they are under £50.
 

ian_m

Global Moderator
UKAPS Team
Joined
25 Jan 2012
Messages
5,247
Location
Eastleigh
Or make your own dosing pump system like I did.
DIY Project - DIY dual peristaltic dosing pump with alternate switching.

Originally I used two timers, one for each pump. Then updated with alternate switching circuit so only one timer could be used.
Finally updated to be controlled via my PLC, which allows much better dosing control, especially useful in "holiday mode" to reduce lighting, CO2 and dosing levels.
 
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