Hi Krish's Bettas
I agree with the above about HC and CO2, but you should have no problem with the P. Helferi.
I have it growing in a low tech tank with low lighting and no CO2. These were cuttings from my high tech tank which got too dense and needed thinning out.
I thought I might have trouble, as it started it's life getting pumped full of CO2 in a high tech tank and now it has none (apart from what's in the water), and it has adapted surprisingly well. It's been in there for about 2 months now. Slower growth but still nice and green.
We live and learn 😀
Chris