Dosing trace elements on younger reefs if you are doing water changes

[b4tn]

I watched a video recently and it was stated you should not be dosing trace elements on reefs younger than a year or two but never explained why. I have a box of red sea Trace Colors ABCD and I was wondering what opinions are on dosing trace elements on young reefs. My current setup is only 4 months old coralline growth has recently exploded and I have both SPS and LPS. I have been dosing 2 part for a while now and according to the BRS calculator I need to dose 2.5 ml of ABCD every 7 days.

I run an algae scrubber, skimmer, and do 5% water changes weekly with standard IO salt. BRS states trace elements are depleted roughly at the same rate as your calcium. My thought process is that if I have to dose 2 part to keep up with nutrient demand, even with water changes, then why would I not need to dose trace elements as well?

For reference this is where I try to keep my levels.

Salinity 35ppt
Mag 1450
Alk 8.6
Calc 420
No3 16ppm
Po4 .16

 

[Spare time]

I dont think the age of the reef matters as much as the demand matters. If you have a lot of corals and dont do frequent water changes then yes you may want to dose. Personally I only dose A and B (and under the recommended dose as I don't test them independently and dose half of what they recommend in accordance to calcium) I ditched C and D as D seemed unnecessary and C has a bunch of metals in it that seem useless (i switched to chaeto grow).

 

[Thespammailaccount]

Red Sea trace elements are either dosed depending on calcium uptake or by element depletion