General doser question

CheckitOut · 03/10/2016, 07:06 PM

I recently bought a GHL doser and I know this sound dumb to some but what exactly does calibrating the pumps mean or do? And what do I calibrate it with?

kurt_n · 03/10/2016, 09:58 PM

Not knowing the details of the GHL, I would say it just means make sure it doses the flow rate that you think it does. If it says it doses at 1.1 ml/minute, just make sure it does. Stick your tubes into some plain water and have it pump into an empty glass for 10 minutes. At 1.1 ml/minute, you better have 11 ml of water in that glass at the end of 10 minutes. If you don't, then you'll need to adjust your dosing time accordingly to get the amount of solution you really want.

Some dosers are smarter than others and actually allow "calibration" - you test it, tell it how much it actually dosed, and it adjusts automatically for you. For other dosers, you have to do the math yourself and adjust your times. I'm not familiar with the GHL, so I'm not sure how smart it is.

clearaquariums · 03/20/2016, 10:25 PM

def is to make sure flow rate is accurate check it once in a while

billdogg · 03/21/2016, 06:00 AM

What they said, but I prefer to use a larger sample - increased time will give you a larger sample of output water to measure and so should then give you a more accurate output number. I run mine for 30 minutes, measure the total, then divide by 30

03/10/2016, 07:06 PM	#1
CheckitOut Registered Member Join Date: Jun 2008 Location: Baton Rouge, LA Posts: 426	General doser question I recently bought a GHL doser and I know this sound dumb to some but what exactly does calibrating the pumps mean or do? And what do I calibrate it with? __________________ Geaux Tigers!!!!!!!! Current Tank Info: 105 gallon sps tank

03/21/2016, 06:00 AM	#4
billdogg Registered Member Join Date: Apr 2008 Location: Grove City, Ohio Posts: 10,806	What they said, but I prefer to use a larger sample - increased time will give you a larger sample of output water to measure and so should then give you a more accurate output number. I run mine for 30 minutes, measure the total, then divide by 30 __________________ I'll try to be nice if you try to be smarter! I can't help that I grow older, but you can't make me grow up! Current Tank Info: 120 mixed reef with 40b sump, RO 150 skimmer, AI Sol Blue x 2, and a 60g Frag Tank with 100g rubbermaid sump. 2 x Kessil A360w lights, BM curve 5 skimmer

03/10/2016, 09:58 PM	#2
kurt_n Registered Member Join Date: May 2006 Location: WA Posts: 2,592	Not knowing the details of the GHL, I would say it just means make sure it doses the flow rate that you think it does. If it says it doses at 1.1 ml/minute, just make sure it does. Stick your tubes into some plain water and have it pump into an empty glass for 10 minutes. At 1.1 ml/minute, you better have 11 ml of water in that glass at the end of 10 minutes. If you don't, then you'll need to adjust your dosing time accordingly to get the amount of solution you really want. Some dosers are smarter than others and actually allow "calibration" - you test it, tell it how much it actually dosed, and it adjusts automatically for you. For other dosers, you have to do the math yourself and adjust your times. I'm not familiar with the GHL, so I'm not sure how smart it is.

03/20/2016, 10:25 PM	#3
clearaquariums Registered Member Join Date: Feb 2013 Posts: 59	def is to make sure flow rate is accurate check it once in a while