I don’t give any sort of nutrients to the plants. Aside from this substrate I bought off amazon. Only beta food that the few ghost shrimp and beta eat. Aside from all that, that’s really all I feed the tank.
Edit: no idea why the hyper link won’t work.
This has been the best I have come across for the money and ease to find. I recommend at least two per five gallons. It's great for plants and shrimp, and cycled quickly.
Mr. Aqua N-MAR-066 1 L Fine Pet Habitat Water Plant Soil https://www.amazon.com/dp/B00JUC6IU0/ref=cm_sw_r_cp_apa_PqMCBbQZKTAGA
This stuff is Mr Aqua soil. They sell small bags of it which is nice. I didn't use the whole bag but I probably should've put more in.
Mr. Aqua Aquarium Soil Substrate 1 Liter https://www.amazon.com/dp/B00JUC6IU0/ref=cm_sw_r_cp_apa_Ur3Ezb4CXXJ49
I had picked it up at the lfs and it was cheaper.
It's the finer granule Aquasoil by Mr. Aqua
Speaking of planted substrates, I got this one for my most recent tank and I really like it!
https://smile.amazon.com/gp/product/B00JUC6IU0/ref=ppx_yo_dt_b_detailpage_o08_s03?ie=UTF8&psc=1
No cloudiness at all, I poured water in right away (you're not supposed to rinse this one) and it looks great in the tank. It's a bit expensive so I mixed it with some black gravel I already had.
I'm sure your clay will settle eventually - good luck!