New tank cycling issue
Hello, I just set up a 10 gallon planted tank with a few anubias , Java fern, crypt parva and staurogyne repens. It's currently stocked with 4 pygmy corydoras, and 7 red cherry shrimps, with a Betta soon on the way. I took my LFS advice and bought a bag of "matrix aquatics live freshwater biomedia". Basically a bag of biomedia with pre seeded bacteria. So I have the bag of media and a bag of eheim substrat pro in my filter. The problem is, he didn't tell me that a water conditioner would basically kill the media which I discovered after a little research. So I added the media to my filter and proceeded to add the conditioned water to my new aquarium. I tested the water 2 days later and my nitrites and nitrates are rising. I just ordered some Tetra safe start plus, it will be here in 2 days. My question is, should I replace all the media in my filter with fresh eheim substrat pro, and then use the tetra safestart, or just add the safestart to the aquarium. Or what would be the best way to go about this. Thank you for your time.