Sharp NO3 decrease after 4 days of TM A and K dosing

[mook1178]

I started dosing TM A and K 4 days ago due to low trace elements in an ICP test. I am starting at the low dose of 1 ml/ 100 l. I expect my TA and Ca consumption to increase as the corals start to grow again. I have not seen that yet, but only 4 days. What I did see is my NO3 drop from ~15 ppm on my last 3 test days, ( ~10 days from the 1st to 3rd), which I would call stable, to 4 ppm this morning.

I was not expecting that, but also makes sense as the algae in the tank will begin to grow better as the trace elements are being renewed.

Just wanted to mention this as I did not consider it and it is not greatly discussed, at least in the research I did about dosing trace elements.

Cheers!

 

[Lasse]

What I did see is my NO3 drop from ~15 ppm on my last 3 test days, ( ~10 days from the 1st to 3rd), which I would call stable, to 4 ppm this morning

What are you measuring with and have you PO4 decrease too?

Sincerely Lasse

 

[mook1178]

What are you measuring with and have you PO4 decrease too?

Sincerely Lasse

Hanna for NO3 and PO4. PO4 I have been slowly decreasing using GFO, so it is hard to answer about PO4

 

[Lasse]

I ask because I am investigating a rather easy way to – using measurements – prove or at least get an indication of whether a decrease (or increase) in one of the nutrients NO3 and PO4 is due to biological growth or other factors – which only affect one of these substances. I would love to see your NO3 and PO4 values for the last two weeks.


Sincerely Lasse

 

[mook1178]

Ask and Ye shall recieve!

NO3 PO4 Date

17.7 0.25 5/23
13.7 0.29 5/27
13.9 0.36 5/31
14.9 0.30 6/3
10.7 0.21 6/7 Note: 6/6 started TM A and K dosing, also changed GFO to a HC GFO on same date.
4.0 0.20 6/10

 

[mook1178]

Well my format did not keep with the post...