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User1
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View BadgesSo far, the best investment I have made in this hobby was the Hanna checker (Alkalinity). API told me one thing and Salifert told me another. So today I ordered a Hannaa checker (same day delivery for free !!!!). I'm telling you...everything Hanna makes, I'm going to purchase. It was simple and so worth it. FYI my alk is 8.7. At least now I know where to go. API said I was low and Salifert said I was high. I didn't know what to do. I just feel more secure with this. I now have a path forward in the alk zone.
I find that the Hanna checker for Alk and Phosphate are reliable and consistent. I've not used them with regards to calibration fluid but I do make sure to take a reading before I send off my ICP tests to ATI. That way I can compare their results to mine and see how close my manual tests are. So far both Hanna tests I do (alk/phosphate) and Nyos Nitrate come back pretty much spot on. Sort of keeps me honest. Note - I send a ICP off about once every quarter. Not many and probably dropping that to every 6 months moving forward once I get a Trident set up.