- Joined
- Jan 29, 2019
- Messages
- 608
- Reaction score
- 567
If your Hanna isn’t showing daily swings you should be fine. The lfs probably uses a crude testing method the Hanna is more accurate and the ati is even more so but unless samples were taken the same day and time the accuracy + daily drift would be expected.I'm pretty sure. I dip everything and have seen no signs of bugs.
I actually think I found out why my corals are struggling. Twice now my tanks done this weird thing were alk raises without dosing and it's happening again and my Alk is far higher than I realized.
My hannah checker showed my alk at 8.7 when I sent my sample to ATI, they tested it at 9.4. And today I took a sample to a LFS just for confirmation and it tested at 10.9 when my hannah showed 9.2
So whie I have no clue as to what's causing it to raise on its own(no3 as stayed at 25ppm or so) I do know now that my testing hasnt been accurate and instable/high all is likely what's killing my corals.
Are you dosing daily? Are you doing large water changes without matching parameters. Those could be the cause of large swing but all should be detectable on the Hanna.
If it’s none of those then seriously start looking for pests. Dipping is actually not that effective pest control unless you do tank transfer method. Many pests eggs survive dip and if you use the wrong dip for your pest type they will survive as well. If you don’t throw frag plugs away before introducing corals that’s another disease vector.