Something new from GHL...what could it be?

[Vinny@GHLUSA]

Is there a way to reduce amount to 30ml min?

At that flow rate, the Doser 2.1 would be a better option for you.

 

[FGK]

I have a SA 2.1 doser. How do I connect to this new slave doser? Wifi? Or needs to be hardwired?
Thanks

 

[Support@GHLUSA]

PAB Connection - wire

 

[FGK]

Is the PAB cable included on the slave unit?
Thanks

 

[Support@GHLUSA]

No, not typically, some folks prefer 18" cables, others require 150' - we leave it up to you to choose the perfect cable for your application as an add-on rather than include and charge for one you'll be tossing.

PAB Cables in the web shop:
https://www.aquariumcomputer.com/usa/product-category/additional-accessories/

 

[Water Dog]

How adjustable, increment wise, are the speed settings for the pump between the 80ml/min and 350ml/min flow rates?

 

[chema]

It is stated in the information about this doser that it is suited for permanent operation. However the average lifetime for the pump head is 800 h. That means that it should be replaced each month?

 

[Support@GHLUSA]

It is stated in the information about this doser that it is suited for permanent operation. However the average lifetime for the pump head is 800 h. That means that it should be replaced each month?

Every mechanical part has finite longevity. There is wear and tear. This entirely depends on the use and environment. ;Bookworm

Your vehicle can be operated for many many year, and miles, however not unlimited year, or unlimited miles.
The more miles you drive, the more tires you will consume and more oil changes you will require.

I used to drive 5,000 + miles a month, and did oil changes every 2-3 weeks, however the wife who drove 1,500 miles a month only performed an oil change every 3-4 months..

 

[Vinny@GHLUSA]

How adjustable, increment wise, are the speed settings for the pump between the 80ml/min and 350ml/min flow rates?

You can dose in 1ml increments.

 

[porter_painter]

Is there a video of one of these in action anywhere? I would love to see it running at full speed.

 

[Mortie31]

Every mechanical part has finite longevity. There is wear and tear. This entirely depends on the use and environment. ;Bookworm

Your vehicle can be operated for many many year, and miles, however not unlimited year, or unlimited miles.
The more miles you drive, the more tires you will consume and more oil changes you will require.

I used to drive 5,000 + miles a month, and did oil changes every 2-3 weeks, however the wife who drove 1,500 miles a month only performed an oil change every 3-4 months..

Yes that's true, but there is a minimum acceptable level and one month is not acceptable in anyone's language. If it is truly the case then the claim that can be run continuously should be removed as it cannot reach the length of your warranty before wearing out, the warranty length should be the period of your fastest wearing part.. you should change to 800hrs of pump use so everyone knows where they stand.

 

[porter_painter]

I think any micro pump would need replacing after moving 16.8k litres of water. You have to remember this is a precision dosing pump and not a return pump.

I will reserve my judgement on if 800 hours is reasonable until I know how much the replacement parts are

 

[mshur]

double post

 

[Mortie31]

I think any micro pump would need replacing after moving 16.8m litres of water. You have to remember this is a precision dosing pump and not a return pump.

I will reserve my judgement on if 800 hours is reasonable until I know how much the replacement parts are

It depends on what there being advertised as being capable of doing? is the pump head classed as a consumable part, or an integral part of the machine? which is why Marcos tyre and oil analogy is very poor, parts do wear in most machines, but how quickly and how aware people are made of them is key. Take LED lights every manufacturer states life of 50000 hours etc you know then that they will last a defined length of time depending on use but they all have a resonable life span..

 

[mshur]

Hi Vinny

Can i do 7 g's WC per day as i do with Litermeter ? wondering how durable motors are..


mike

 

[Mortie31]

I think any micro pump would need replacing after moving 16.8m litres of water.

To my calculations it's 16800 L of water in 800 hours pump life, which is just over 2 yrs for me doing 150L water changes per week... I can just about live with that...

 

[porter_painter]

Yep, my maths was wrong - now corrected.

If you look at the d+d peri pumps they have a 12m life...I think the motors are classed as consumable.

Let’s wait and see what the the parts cost

 

[JustAnt]

Can this be used for dosing 2 part or do I need the GHL 2.1 doser to dose 2 part? Thanks

 

[Water Dog]

Can this be used for dosing 2 part or do I need the GHL 2.1 doser to dose 2 part? Thanks

If you had a really big tank with a huge demand, then sure, I guess it’d work. Just remember, these pumps are rated at 80-350ml/min, a sizable amount volume wise which is more suitable for AWC. The Doser 2.1 runs much slower, thus making precise dosing adjustments much easier IME.

 

[Matthias Gross]

I still think that it is correct to claim "continues run" in this context, even when the pump head has "only" a lifetime of 800h.
"Continues" means here that it is allowed to run the pump/motor without a pause without risking to damage through overheating (leave the 800h as limiting factor aside here). Many dosing pumps have a max. duty cycle, e.g. 15 minutes on, 15 minutes off.
800h = 48000 min -> 16800 liters (4400gal) is a lot for a dosing pump. We are not talking about a return pump here.

Price point for the replacement pump head: $29.90