ICP applied to Tank

[762pmcs]

Hello All,

I've been having some issues with my torch (2 months) and toadstool (~3 weeks) and my zoas, within the last week have joined the protest.

Looking for direction on things to watch/try on why.

Here's my stats:

~90 gallon display with ~10 gallon sump

I recently (6 weeks) switched from RC to IO salt but was having the torch issues before the change, and switched to lower my Alk on water changes.

I was dosing kalk via ATO (@ 1 tsp/gal of RO/DI water) but stopped about 1 month ago to observe the change in preparation for switching to a dosing pump.

Planned on using said pump to dose Kalk and All-for-Reef (powder), but I want to hold off until I know why these dudes are angry.

Lo/Hi Hanna tester results over past month:
NO3: 10.9-26.7
PO4: 0.0-.46
Alk: 7.9-11
Ca: 467-505
Mg: 1430-1650

Most recent:
NO3: 16.8
PO4: .16
Alk: 9.5
Ca: 505
Mg: 1430

Attaching my ICP that I sent in with the same water as my most recent hanna test were. Also, some tank photos. Full disclosure, between Thanksgiving and traveling for work, my NO3/PO4 slipped and I had to fight some dino's for a couple weeks while dosing both NO3/PO4, I'm monitoring them both closly to hold the 100:1 ratio, but I had the problem with the torch before the swing, so maybe it's not related.

I think it of note that my SPS are killing it, growing awesome since being added.

I think my flow is solid, 2 MP-10's on the back wall and 1 MP-40 across the front.

2 G5 XR-15 pros (AB+ profile). Throwing in PAR readings as well.

Any help is appreciated, thanks folks.

 

[ingchr1]

If you are going to be using ICP I would suggest sending out another sample to a different vendor. The one you are using (ICP-Analysis.com) is not the best, as shown by various posts on this forum.

Bump for input on your corals.

 

[762pmcs]

I'll say no ICP test is really that great, any research on the subject is inconclusive. The only discernible comparison would be OES vs. MS. However, I had a couple year hiatus from reef keeping and while I previous went with ICP-Analysis at the time, I was disappointed that I no longer had the option to send in my RO/DI water.

In searches for the current standard, I saw that ATI is fairly well recommended, so I'll see how those tests compare as soon as I use my remaining ICP.

thanks for the bump