I just ran 3 tests in a row on my Hanna ULR Phosphate and had 3 different results. (Between .09 2nd test and 3rd I decided to put in a new battery just for heck of it btw)
.18ppm
.09ppm
.21ppm
Has anyone else ran a couple to few tests in a row w/ different ranges outside the margin of error...
This is a 1 week old Hanna Checker - LR Phosphate - used 2 times only. Comes with 3 packs of reagent and original box, battery, 2 vials. Asking 50. Can ship at owners cost. Have purchase receipt of Mar 9th 2023.
So last night I did my weekly phosphate test and got a reading of 0.5. This is over 3 times the highest reading I’ve ever had on this tank!! I normally run under 0.1 and actually have to dose phosphates and nitrates occasionally because they tend to bottom out. I added GFO to
My carbon...
Hi ,
Left hobby but have Hanna Alkalinity , Phosphate checkers which were bought in end of 2020 and almost new .
Plus a very special Hanna HI 12302 field blue tooth pH meter that was used to check pH accurately . It connects to Hanna Lab app in iOS and android . normally this sells for 200$ ...
I have a few items for sale all used
Hanna Phosphorus ULR HI 736 - $35 comes with expired regs new in box
Hanna Phosphate ULR HI 713 - $35
Hanna Phosphate Low Range HI 93713 - $75 Comes with new glass and expired regs
Doing little spring cleaning. All items are available to be shipped. Please DM for shipping quote.
1) Ecotech VorTech MP40mQD - Mobius Ready QuietDrive Propeller Pump
Mfg 2017, but only been used for 2 years
One of propeller guard ribs is missing but doesn't seems to affect performance. (See...
Selling a Hanna HI 774 Phosphate URL tester in good working condition for $35 shipped with paypal payment.
No test packet.
Please PM, preferably with cell and your zip/address, if interested.
Thanks,