Instead of buying lots of junk that is going to keep swinging your cycle, just wait it out and let the tank cycle naturally since you already have your ray. Watch the ammmoina levels, and do small water changes as they start to creep up. Don't clean out your filter and don't vacuum the gravel until you start seeing nitrates show up.
Watch your ray closely. The animal will tell you how the cycle is going. If it shwos signs of stress, do the water change.
All those chemicals have a side effect of bonding with O2, meaning there isn't much left for your ray. The airstone is a smart choice. Keep a lot of surface movement. I'd also make sure there is air moving across the surface, don't keep a very tight lid on it.
Watch your ray closely. The animal will tell you how the cycle is going. If it shwos signs of stress, do the water change.
All those chemicals have a side effect of bonding with O2, meaning there isn't much left for your ray. The airstone is a smart choice. Keep a lot of surface movement. I'd also make sure there is air moving across the surface, don't keep a very tight lid on it.