- Joined
- Nov 27, 2019
- Messages
- 21
- Reaction score
- 17
I just recently got mine replaced. Did a side by side of the new and old one using the same reagent powder and got +.90 on the old one, and .57 on the new one! Pretty big difference! It's not often, but occasionally, as with any sensitive piece of testing equipment, they can have issues. The company was wonderful about replacing mine!
So I've recently started using the HI774 Phosphate ULR Marine Checker and was hoping you could help clear up a little confusion for me.
I'm about six months into my first reef tank (25g Fusion Pro Lagoon) and up until this point, I've been using the Red Sea Pro Algae Control Pro kit to test for phosphate with precise results.
I tested using the Hanna Checker yesterday 6/12 and got a reading of 0.58 which is way higher than I was expecting. I've always tested in the 0.04 - 0.08 range with the Red Sea Pro kit.
Is there a conversion or something I need to do with the Hanna Phosphate ULR checker? The checker clearly says the reading is in ppm, my understanding has always been that's the standard unit for measuring Phosphate in the hobby with 0.03 being more or less the target for most hobbyist aiming for low nutrient systems.
Obviously I'm missing something here? I literally flunked high school chemistry lol.
The fact that Hanna Phosphate ULR checker is a new product that seems to have replaced the HI736 Hanna Phosphorus ULR Checker - a checker that used units of ppb and needed a conversation only adds to my confusion.