automatic Fertilizer dosing pump

[neon]

This thread may be placed under DIY/equipment thread, but just want to get feedback from all bro here .

Has anyone used any fertilizer doser pump or any DIY fertilizer doser , exclude those dripping method ?

As I am doing the EI method, and thinking if there is anyone has similar setup or DIY, ie put a bottle for 1 day dose - with all the mixed solution or powder , an small holes at the middle height of the bottle . An internal pump to pump water into the bottle with some timer to dose.

Cheers

[solonavi]

Doesn't sounds too difficult. But can we mix all the solution together? Chemical reaction?

JC

[valice]

Given that the compounds in the fertilisers are already in complex forms, I think they will probably need some kind of higher temperature to react...

Else the chemicals would jolly well have reacted in the tank right? Just my opinion... Hmmm.... then it would abit like PMDD if we mix everything up into 1 solution right?

[Fei Miao]

Someone already did that, I saw it quite a while ago. I passed a diagram of that to a friend whose is quite a electrical/electronic genius to work on it for me..kekeke.. haven't come to me since, time to give him a call think I lost the original diagram though

[solonavi]

It'll be cool to see the diagram again. Keep us posted, ya.

Cheers
JC

[Fei Miao]

Yeah, I'll see the guy tonight, will try to dig up the file.

[neon]

Ya , would like to see the design.

Keep it coming !

Cheers

[spinex]

I'm using Eheim auto doser and mixing all the liquid fert together into the solution. I mix Lushgro, Seachem Flourish and KH2PO4. Maybe i will change to KNO3, TMG, KH2PO4 when i finish my solution. Anyway, far my shrimps and fish are okay.

For your info, Eheim doser can be set to dose max of 8 times within 24 hrs. Each time is 1ml of liquid dosing so it's a max of 8ml per day. I used this to dose according to EI (Estimative Index) partly because i'm lazy to dose every now and then and also this mean it's a consistent dosing spread out evenly within a day.

[solonavi]

Hi spinex, is the dosage of 1ml fitted? Can we change it? Wat's the indicative cost for an eheim doser?

Cheers
JC

[loupgarou]

I bought the eheim doser from NA at $70, find it a pain to setup the timer each time the battery dies, I always wanted to hook it up to a dc adapter but too lazy to go down to sim lim tower to get the parts..

if you're interested in it, let me know anyway.

[spinex]

Hi spinex, is the dosage of 1ml fitted? Can we change it? Wat's the indicative cost for an eheim doser?

Cheers
JC

Yes i bought at $70 also. 1ml is fixed can't change that. So it's a max of 8ml per day. So if you want to dose according to EI you have to make calculation and mix your own solution.

I do my calculation using the Chuck calculator based on my tank's need.

So if your tank is huge 1ml of your solution need to be concentrated if you want the auto doser to last 1 week.

[spinex]

I bought the eheim doser from NA at $70, find it a pain to setup the timer each time the battery dies, I always wanted to hook it up to a dc adapter but too lazy to go down to sim lim tower to get the parts..

if you're interested in it, let me know anyway.

Seem like a good idea to hook up to a adaptor.

How long does the 2 x AA battery usually last ? I have been using it for only 1 week.

[solonavi]

Thanks for the advise. Where can we get the raw chemical to mix?

Thanks
JC

[spinex]

Thanks for the advise. Where can we get the raw chemical to mix?

Thanks
JC

I get from NA. KNO3 and KH2PO4. You can also use those solution (ready made) fertilizer but they won't be so concentrate (esp for your large tank).

Anyway for such a big tank of yours getting powder form of fert is more economical for you.

Of course you still need micro fert. Tropica Master Grow, EasyLife, Seachem Flourish, Lushgro micro are considered micro.

[Ibn]

Using a couple of APT peristaltic pumps right now. One for the macros and one for the micros (CMS+B). Dosing EI and instead of doing macros one day and micros the next, I just have it set to dump 1/2 of the required amount on a daily basis.

Amount that this pump can dose is much higher than the Eheim.

[solonavi]

Any DIY mechanical expert want to try this? Saw it in APC.


http://www.home.zonnet.nl/rsetteur/a...seer_spuit.htm

JC

[spinex]

Saw this before. I will say not really practical esp for big tank because if the syringe is larger size it won't work. Anyway how many days can it last when it's 10 or 20ml ?

Time and effort spend to DIY buy Eheim doser at $70 better.

[solonavi]

Think its suppose to draw the liquiid from a container. Notice the two check valve in opposite direction. Anyway, its for those DIY guru to play with.

Cheers
JC

[spinex]

Think its suppose to draw the liquiid from a container. Notice the two check valve in opposite direction. Anyway, its for those DIY guru to play with.

Cheers
JC

I read this before. The liquid fertiliser is in the syringe definitely not drawing from a container. Because it using the timer as the mechanical part to squeeze the syringe bit by bit. If the syringe is big, the timer is not able to push it. Anyway those who have tried it say the output amount is not consistent everytime

[ruud]

Think its suppose to draw the liquiid from a container. Notice the two check valve in opposite direction.
Cheers
JC

Thats right

If the syringe is big, the timer is not able to push it.

Y have try bigger syringe (20 ML) and its works fine.
There are more on this site and all they works!!

Sorry for the English, i can read but no write