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Iron is such a varying thing that testing is probably better accepted in a ballpark area. I've found that the Nutrafin test is fine and calibrates nicely. If you're going to buy Hanna products (and i own some), I'd spend the money on their alkalinity or phosphate colorimeters before buying an expensive iron test.
 

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If you're going to buy Hanna products (and i own some), I'd spend the money on their alkalinity or phosphate colorimeters before buying an expensive iron test.
All Hanna Checkers are $49.99 each, Fe is not more expensive?

API is fine for phosphate and the KH is not so bad either.
For KH increase sample size if measuring low levels.

Fe being the indicator element for micro dosing has led many of us blind for a long time.
I've tested friends tanks only to find zero Fe or as high as 1.5ppm.
 

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All Hanna Checkers are $49.99 each, Fe is not more expensive?

API is fine for phosphate and the KH is not so bad either.
For KH increase sample size if measuring low levels.

Fe being the indicator element for micro dosing has led many of us blind for a long time.
I've tested friends tanks only to find zero Fe or as high as 1.5ppm.
Yes, they are all ~$50, and my point was to buy others in their line before Fe. I have found that the API KH kit, even when sample size is increased by 5, to not be as precise as the Hanna and, to me, once we are reading at 1 dKH or below, a small difference is more magnified, whereas reading Fe at .1 to .3 is not as critical so long as it is there. Interestingly, my Fe gluc is dosed at about .1 / day, yet it is not readable after 30 minutes.

Regarding PO4, I was not at all happy with the API ability to distinguish well below about 3ppm. Salifert is much better and the Hanna low-range is very good below 3ppm. However, above 3ppm and the API excels, although I suspect that the Hanna high-range would still be more precise, but who needs precision above 3ppm.
 
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I use the one for dkh. Great product, my only complaint is the reagent is a bit pricey, about 75¢ a test. I'm thinking of getting the nitrate tester, especially after hearing all of the complaints with the API nitrate test.
 

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I use the one for dkh. Great product, my only complaint is the reagent is a bit pricey, about 75¢ a test. I'm thinking of getting the nitrate tester, especially after hearing all of the complaints with the API nitrate test.
Try the Salifert NO3 kit, first. It is much easier to use than the API and gives clearer results.
 
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Discussion Starter · #9 ·
Has anyone used this unit before HI83300-01
Multiparameter Benchtop Photometer and pH meter ? I am wondering if this is the unit where you can take any one of the various handheld colorimeter units. place it in the socket and test. I don’t know if this is the correct unit or not? I was reading about another unit that was priced at approximately$1200 but I can’t seem to find the article. sure it is costly but I digress I’d still like to learn about it.

Sent from my iPhone using Tapatalk Pro
 

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Has anyone used this unit before HI83300-01
Multiparameter Benchtop Photometer and pH meter ? I am wondering if this is the unit where you can take any one of the various handheld colorimeter units. place it in the socket and test.


Theabovelink has details about it and lists all the tests it can do. it basically works the same way as the $50 checkers that were mentioned earlier. However unlike the checker that can only do one test, this unit can do about 50 different tests However not all the tests it can do are aplical to aquariums. It can however test for all the macro nutrients (N, P, K, Ca, Mg, S Cl) a few micros (Fe, Mn, Cu, Ni) Gh, Kh, PH, Ammonia, Nitrite, Nitrate.

Please note the ranges listed in the tests. Some tests are low rang, mid range, and high ranges for the same element. You want to use the tests that are in the range typical for an aquarium. One test for Zinc (a micro nutrient) is only for high range ppm range while most aquariums are in the low ppb range. So the Zinc test isn't that useful Other tests are for marine tanks while most are for fresh water. IF you can afford it it is useful. but in many case great accuracy i not always needed.

I have looked at it and the higher priced version that can do even more tests but do you need all that? Another option would be to buy a few low cost tests and occasionally send out a ample to a lab for a ICP-OES test that can measure 13 of the 14 nutrients down to 0.001ppm for $30 a tests. I am currently thinking the $30 lab test and a few $50 checkers. PH pen, and TDS meter are a better route.

While I really like the Hanna checkers I worry that they may abandon the product. Many of the checkers they release were mainly geared for water contamination monitoring, or laboratory tests. Many the checkers are not useful for aquariums. And the one checker many people want a nitrate checker was never produced. Only a couple of new checkers were release after the initial product launch and nothing has been added in the last several years.


There are about 9 different models: The more tests a unit can do the higher the cost.
[URL="https://www.hannainst.com/search?search_query=photometers#/filter:product_type:Benchtop$2520Meters/perpage:36"]https://www.hannainst.com/search?search_query=photometers#/filter:product_type:Benchtop$2520Meters/perpage:36
 

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Discussion Starter · #15 ·

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Discussion Starter · #17 ·


Theabovelink has details about it and lists all the tests it can do. it basically works the same way as the $50 checkers that were mentioned earlier. However unlike the checker that can only do one test, this unit can do about 50 different tests However not all the tests it can do are aplical to aquariums. It can however test for all the macro nutrients (N, P, K, Ca, Mg, S Cl) a few micros (Fe, Mn, Cu, Ni) Gh, Kh, PH, Ammonia, Nitrite, Nitrate.

Please note the ranges listed in the tests. Some tests are low rang, mid range, and high ranges for the same element. You want to use the tests that are in the range typical for an aquarium. One test for Zinc (a micro nutrient) is only for high range ppm range while most aquariums are in the low ppb range. So the Zinc test isn't that useful Other tests are for marine tanks while most are for fresh water. IF you can afford it it is useful. but in many case great accuracy i not always needed.

I have looked at it and the higher priced version that can do even more tests but do you need all that? Another option would be to buy a few low cost tests and occasionally send out a ample to a lab for a ICP-OES test that can measure 13 of the 14 nutrients down to 0.001ppm for $30 a tests. I am currently thinking the $30 lab test and a few $50 checkers. PH pen, and TDS meter are a better route.

While I really like the Hanna checkers I worry that they may abandon the product. Many of the checkers they release were mainly geared for water contamination monitoring or laboratory tests. Many the checkers are not useful for aquariums. And the one checker many people want a nitrate checker was never produced. Only a couple of new checkers were release after the initial product launch and nothing has been added in the last several years.




There are about 9 different models: The more tests a unit can do the higher the cost.
[URL="https://www.hannainst.com/search?search_query=photometers#/filter:product_type:Benchtop$2520Meters/perpage:36"]https://www.hannainst.com/search?search_query=photometers#/filter:product_type:Benchtop$2520Meters/perpage:36
Thanks, Surf. I'm going to look into these further, there's a Hanna model that's $540 (not including anything else, e.g. individual colorimeters, reagent materials, etc.). I have the Iron Colorimeter coming, I'm eager to see how it works. I've been keeping fish for a long time, although relatively new to the PlantedTanks and I'll definitely be doing this for a long time to come, so ... we'll see, something like may be worth it for me? I'd imagine if we were to go in on a group buy they might offer some discounts? Anything is possible. This is a work in progress for me. More info. to follow for anyone else that may also be interested.

DD
 

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Discussion Starter · #18 ·
You think Hanna is expensive check out Hach Colorimeters.
Very nifty. Thanks for sharing.

Bump:
I even have auto testing systems for my reef tank. That’s al the rage in reef tanks now. A friend of mine developed the Apex Trident model.
https://www.neptunesystems.com/products/expansion-modules/trident/
Coming from the Reef hobby where testing is done a lot. You learn what equipment to buy.
I don't know how big/popular the PlantedTank industry~business is, but it would seem that a method for monitoring or at least testing nutrient levels, offered at a reasonable price would be a moneymaker? Maybe there just isn't a demand? I've definitely got my eye on the Hanna gear and if I see myself using it enough, I may have to add it to my wish-list.
After I figure out my dosing, focusing on better methods of determining my PlantedTanks (have 3 currently) nutrient,PH, alkalinity levels is on my list.
 
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