GHL issues - lemon or reality?

[JeffB418]

I can't fathom how it can properly empty a beaker and not leave residual reagent or tank water after each test. But I don't own one and their website information is terrible.

It operates very similar to other beaker alk testers (like the alkatronic, reef factory, kamoer KH tester, etc) in the method of using a beaker plus an acid for titration. It uses a larger volume for the process than alkatronic tho which helps with reducing error in testing plus it does run rinse/drain cycles before/after tests. All these machines pretty much work the same way and use the same acid reagent, they just come in different form factors.

 

[BeanAnimal]

It operates very similar to other beaker alk testers (like the alkatronic, reef factory, kamoer KH tester, etc) in the method of using a beaker plus an acid for titration. It uses a larger volume for the process than alkatronic tho which helps with reducing error in testing plus it does run rinse/drain cycles before/after tests. All these machines pretty much work the same way and use the same acid reagent, they just come in different form factors.

That fully sidesteps my point.

I understand how alk titration works and the chemistry. The point was that they have to suck water out of the bottom of a beaker, and that leaves reagent, salt, rinse whatever behind.

 

[JeffB418]

That fully sidesteps my point.

I understand how alk titration works and the chemistry. The point was that they have to suck water out of the bottom of a beaker, and that leaves reagent, salt, rinse whatever behind.

I addressed this point with these 2 items:
- uses a larger volume for the process than alkatronic tho which helps with reducing error
- it does run rinse/drain cycles before/after tests

these items help reduce error introduces due to effects of what you are referring to

 

[BeanAnimal]

I addressed this point with these 2 items:
- uses a larger volume for the process than alkatronic tho which helps with reducing error
- it does run rinse/drain cycles before/after tests

these items help reduce error introduces due to effects of what you are referring to

It doesn’t change my overall point. As I said I don’t have one to do any testing with to compare accuracy with anything else,
Including the KH-D.

The chambers differ, the mixing method differs, as does the draining and the pump used for titration. So yes they are all alk titration testers, but do differ considerably.

 

[JeffB418]

Just for comparison for the OP. I run an aquawiz in parallel my iV. Generally they remain within 0.1dkh of each other. Aquawiz I have to refill and recalibrate every 4-5 weeks iV I just refill the reagent every 3 weeks, and haven’t recalibrated pumps or ph probe in 118 days.

 

[braaap]

To clarify, Trident is colorimetric vs ph probe based and I don’t trust the colorimetric process relative to the ph probe process.

I picked the new 2.2 doser over a new 3.0 doser because I read the 3.0 had lubrication requirements that i wanted to avoid.

My trident acm and trident np have been nearly flawless. Within standard of error when comparing to Hanna. Been running both since they launched.

That said I’m only running those. Everything else is Hydros. And if the pipe dream Maven ever makes it I’ll swap to it.

 

[BeanAnimal]

Thanks for the chart, Jeff. They track fairly well.

 

[carri10]

To the OP. I think you've a lemon. I went GHL becuase of harware reputation. I've not had any problems with dosers, every 4 months I recalibrate and they are always require very little change. You do need to go through their ticket system for complaints however, otherwise they get a bit difficult, in EU at least.