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Between a Lamotte kit and the Hanna checkers, I can cover testing for Nitrate, Phosphate, and Iron pretty accurately and reliably.

The recent threads about toxicity and my own current experience with poor growth have made me wish there was a cost effective way to test aquarium water for the other key nutrients. I would like to see results for Potassium, Ca and Mg individually (not just GH) and to effectively rule out (or in) toxic levels of micros for things like Cu, Zn, etc.

I've searched for aquarium water testing services, but the only places I've found that cover these parameters seem to be for reefers and say results would be inaccurate for freshwater.

Anyone know of a service that would check freshwater aquarium samples for some of these less easy to self-test parameters?
 

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Api has a calcium test kit, which should allow you to work out Mg with GH tests. I think there is also a copper test kit, but what levels it tests at I have no idea, same goes for potassium kits (and the expense could be pretty significant as well).


There was a thread a week or 2 ago where someone mentioned a setup that could test for ~40 water parameters with pretty decent lab grade resolution. Only problem was it was in the hundreds of dollars range, plus the cost of reagents. It might be interesting to find someone that has that kit and see if they would be willing to test your water for you...
 
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