150 doses per/day automatic dosing- time calculations?

[Reefahholic]

How does the doser calculate dose times? How frequent does it drop the dose? Like say I start the dose at 3pm and the doser drops 150 doses a day / 24 hour period. So it starts at 3pm Monday evening and stops at 3pm Tuesday evening? Is this correct?


60 minutes in 1 hour

60 minutes x 24 hours = 1440 minutes

1440 minutes / 150 doses = a dose every 9.6 minutes.?


So the doser drops a dose just a little less than every 10 minutes? I'm horrible at math.

Math people...please post up.




If anybody knows, please let me know.

 

[Reefahholic]

@Vinny@GHLUSA @Matthias Gross

 

[Potatohead]

Yes it just takes 1440 minutes and divides by the number of doses. It may round to the nearest minute for each dose, I haven’t tested it myself.

Now this is a bit off topic but I wish manual dosing had more than eight slots. Like it would be nice to dose say 2/3 of alk during lighting period and 1/3 after but we can’t do that unless we divide it over only eight doses.

 

[Reefahholic]

Yes it just takes 1440 minutes and divides by the number of doses. It may round to the nearest minute for each dose, I haven’t tested it myself.

Now this is a bit off topic but I wish manual dosing had more than eight slots. Like it would be nice to dose say 2/3 of alk during lighting period and 1/3 after but we can’t do that unless we divide it over only eight doses.

How did you get that information?

Yes, I agree...we all want more than 8 manual doses. How about the option for 75 in 12 hours or 150 in 24 hours like the automatic dosing.?! I’m not sure if they can change that with a firmware update, but that would be very nice.

Plus, adding stop times. I’m not sure why it only has a starting dose time, but yet no option to stop the dose.

Those two issues alone are killing me.

@Vinny@GHLUSA

 

[Potatohead]

Why would you want to dose based on elapsed time? Typically you dose a set amount of liquid. If you’re using something like a 1.1ml doser based on time you would need a controller to control the power to the doser unit.

 

[raultsu]

How did you get that information?

Yes, I agree...we all want more than 8 manual doses. How about the option for 75 in 12 hours or 150 in 24 hours like the automatic dosing.?! I’m not sure if they can change that with a firmware update, but that would be very nice.

Plus, adding stop times. I’m not sure why it only has a starting dose time, but yet no option to stop the dose.

Those two issues alone are killing me.

@Vinny@GHLUSA

+1. I find it annoying that there’s is only a start time

 

[Reefahholic]

Why would you want to dose based on elapsed time? Typically you dose a set amount of liquid. If you’re using something like a 1.1ml doser based on time you would need a controller to control the power to the doser unit.

If you keep Acro’s...the name of the game is stability. I’d prefer (like most people would) to drop my Alk doses when my pH swings the lowest. Which is usually early in the A.M. hours after lights out. This way you can equal out the swings and provide more stability for the corals. Ever heard of running a refugium with a reverse light cycle?? Same concept.

 

[Lasse]

It is possible to do that

If you use your pH probe to control anything else you need to make a new virtual probe. If you use your pH as a monitoring equipment – use that probe - let us say it is pH1. If you want it to stop at 8.0 in pH. Put the nominal value to 8, hysteresis to 0.05. Controller mode – two position controller.

Step two – take an unused Dosing pump (not a real – just one Dosing pump function in GCC) I use to take Dosing pump 16. Here you create your automatic dosing like you want to have an even dos for 24 hour. Let us say 2 ml and 150 dosing’s

Now we go to programming logic and make a function. My example G1 It should be input 1 – dosing pump 16 – function should be and, input 2 should be pH1 (if that was what you chose) function control downwards (decrease)

Next step – switch channels and outlets. Chose one you do not use as a power bar. I usually start with 64. Function programming logic 1 (if that was your choice in step 3)

Step 5 – now we go to the Dosing pump menu again. Chose the actual pump that dose your alk. Calibrate that and take the calibration value both for that pump and 16 In pump react to – chose switch channel. Index 64.

Now will it dose according to dosing pump 16 schedule as soon your pH is above 8.025 and stop dosing when it is 7.975

I use a similar function but input 2 is a timer. In opposite to you – I want to dose my alk during night and the timer is active between 22:00 – 10:00 It works like a charm

However – I have not test this version – be careful and test that it works – no guaranties

Sincerely Lasse

 

[Silver14SS]

If you keep Acro’s...the name of the game is stability. I’d prefer (like most people would) to drop my Alk doses when my pH swings the lowest. Which is usually early in the A.M. hours after lights out. This way you can equal out the swings and provide more stability for the corals. Ever heard of running a refugium with a reverse light cycle?? Same concept.

Your alk consumption is probably the lowest there too. Dosing alk with nothing using it will cause it to rise.

If stability is the goal, you may want to dose alk as it is being consumed throughout the day. I'd rather have a swing in pH than alk.

 

[Member No 1]

It is possible to do that

If you use your pH probe to control anything else you need to make a new virtual probe. If you use your pH as a monitoring equipment – use that probe - let us say it is pH1. If you want it to stop at 8.0 in pH. Put the nominal value to 8, hysteresis to 0.05. Controller mode – two position controller.

Step two – take an unused Dosing pump (not a real – just one Dosing pump function in GCC) I use to take Dosing pump 16. Here you create your automatic dosing like you want to have an even dos for 24 hour. Let us say 2 ml and 150 dosing’s

Now we go to programming logic and make a function. My example G1 It should be input 1 – dosing pump 16 – function should be and, input 2 should be pH1 (if that was what you chose) function control downwards (decrease)

Next step – switch channels and outlets. Chose one you do not use as a power bar. I usually start with 64. Function programming logic 1 (if that was your choice in step 3)

Step 5 – now we go to the Dosing pump menu again. Chose the actual pump that dose your alk. Calibrate that and take the calibration value both for that pump and 16 In pump react to – chose switch channel. Index 64.

Now will it dose according to dosing pump 16 schedule as soon your pH is above 8.025 and stop dosing when it is 7.975

I use a similar function but input 2 is a timer. In opposite to you – I want to dose my alk during night and the timer is active between 22:00 – 10:00 It works like a charm

However – I have not test this version – be careful and test that it works – no guaranties

Sincerely Lasse

Lasse,
I've used this example to control dosing pump 3 to add Kalk. I have a few questions.
Step 1 - pH set to 8.5 hysteresis 0.05 Control mode - two position controller.
Step 2 - Dosing pump 16 even dose 24hrs 25ml 150 dosing's
Step 3 - G17 Input 1 dosing pump 16 function AND input 2 ph1 control function upward (increase)
Step 4 - Ok
Step 5 - This is where I have a few questions. I calibrated dosing pump 3, now do I put this value in dosing pump 16 so it mirrors pump 3? With the function control in G17 set to upward (increase) will pump 3 stop if the pH is over 8.5? If I need to change the dosing amount, do I need to change it in both pump 3 & 16 or just pump 3?