I'll test all parameters at 8pm tonight,"I just don't want my alk to bottom out and loose my sps"
If you listen to some of the advice in this thread you will, trust me. Want to put money on it?
As per my 1 million or so comments on this alk is very unstable in young tanks and typically drops quite aggressively. Quite often this drop has nothing to do with SPS consuming it. However, you do need to keep alk up or you will lose SPS.
Easiest way and cheapest way to do this is with a box of baking soda and the online reef calculator. However, a rule of this forum is to make simple things complicated to generate web traffic,
Get a box of baking soda and use the online reef calculator. Done. Test alk every couple of days and adjust. It's stupid simple. You do not need a dosing pump. I doubt your calcium level has changed much from your default salt mix level because nothing is consuming it. You need a lot more fast growing SPS to dent calcium, and you don't have it.
What's more important is you aren't stating what your nutrient levels are, and this is just as important as anything else in a young tank. I'm seeing some nuisance algae and a lot of water changes, which means nitrate and or phosphate are likely low or zero. This will kill that neon green birsdnest in about a month.
You should not introduce SPS in a young tank with nuisance algae present because you will have nasty nutrient swings that will bleach and ultimately kill SPS. If you raise nutrients to make things stable you feed the nuisance algae. See the problem?
You can get the worlds most expensive dosing pump and Elon Musk certified alk and calcium test kit. Unless you can get nutrients stable you will lose those SPS.
My nitrate is usually at 2-5ppm
Phosphates was .o3ppm last test
I used cultured rock from my LFS
So your saying skip the 2part and dose baking soda?
Conflicting suggestions I'm getting