So i started a new tank (90 gal) with a large forza canister filter, lights off, uv off, temp at 80f. I started the tank up and started feeding it daily, after 3 days i added a large amount of existing media from my established tank to speed up the cycle. I had been over feeding the donor tank for the last 2 months to bolster the bacteria colony in prep for the transfer. Now i'm a week into the cycle and something that i've never seen is happening, i have around 2ppm of ammonia and 20 to 40 ppm of nitrates. 0 nitrites. I have always done new tanks with the seeding method and its never skipped nitrites let alone had ammonia and nitrates at the same time. I usually see a full cycle in less than a week doing it this way so i'm not sure what is different. I dont really need advice on how to finish the cycle, i know it will complete on its own, i'm more just curious if anyone else has seen this and what the cause was.