Could still be acclimation issues at 1 week?
But you are dosing Ferts different than most. On top of your Gh being too low. Gh needs to be at the very least 4 dGh, preferably closer to 6 or more
And why are you dosing Excel and co2? Typically you run one or the other. If for algae control it really should be used only as "one time" treatments. Not dosed regularly.
Since you are injecting co2 here is my take...
I would highly recommend looking into the EI method of dosing Ferts. Basically you dose Macros (N,P,K) 3x per week and micros (your Tropical Premium) 3x per week alternating days.
You can also take a look at the PPS pro method which splits the dosing up into daily doses at lower levels.
I will tell you that I started out using PPS pro and quickly realized that was not enough. I now use a slightly modified version of EI dosing. Macros all at once at the beginning of the week (front loading) with micros 3x. Experiences differ among those using PPS Pro.
As it sit's right now you are only dosing micros, way too much, and K. You don't have enough nitrates, Gh (Ca:Mg), and more than likely phosphates.
And then there is your co2. 2 bps means nothing without some kind of baseline. Are you using a drop checker? Or better yet test pH of completely degassed tank water (let sit out for more than a day or run an air stone) and then test pH right before lights out. What is that difference? You are looking for roughly a 1.0 pH drop.
My tank pictured below (just trimmed the mini red way back) is running at about a 1.2 pH drop. RO water with 1 dKh. 7-8 dGh. Front loaded macros. Micros 3x per week. Nitrates at around 20ppm.
Shot glass is holding down my Monte Carlo which finally let go, lol!
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