Hi guys, I think my fish and I need some help, thanks in advance for this, this forum has been a great help already so a quick thank you to all who have helped so far!
I recently set up a 120L tank that I filled and left for roughly 2 weeks with a new filter and water heater - I didn't do any water changes in this time due to lack of knowledge which I regret.
I decided to stock my tank shortly after this point with 4 male guppies and 9 neon tetras which seemed to go well following their introduction, I had a very basic test kit that consisted of strips and nothing more, not very accurate. I thought I had it under control though.
Recently my male guppies have been swimming up and down the glass, a phenomenon I researched to be 'glass surfing' and could be down to anything from playing to stress, I worry this is stress related.
I'll attach a YouTube video of this behaviour.
I bought some better test kits after doing some proper research (late I know, lessons learned) and I'll post photos of the results to see what you think.

Here are some water tests, I hope I shook the bottles enough because I've read that they need quite the shake to get an accurate result. It looks as if the nitrite is zero? I also think my pH may be too high, our water quality in this area of Welwyn Garden City is terrible
I'm waiting on a master test kit in the post so that might have a more detailed scale?
I'm not sure where to go from here to help calm down my poor fish, its keeping me awake at night worrying about them!
Thanks so much if you've read this far
I recently set up a 120L tank that I filled and left for roughly 2 weeks with a new filter and water heater - I didn't do any water changes in this time due to lack of knowledge which I regret.
I decided to stock my tank shortly after this point with 4 male guppies and 9 neon tetras which seemed to go well following their introduction, I had a very basic test kit that consisted of strips and nothing more, not very accurate. I thought I had it under control though.
Recently my male guppies have been swimming up and down the glass, a phenomenon I researched to be 'glass surfing' and could be down to anything from playing to stress, I worry this is stress related.
I'll attach a YouTube video of this behaviour.
I bought some better test kits after doing some proper research (late I know, lessons learned) and I'll post photos of the results to see what you think.

Here are some water tests, I hope I shook the bottles enough because I've read that they need quite the shake to get an accurate result. It looks as if the nitrite is zero? I also think my pH may be too high, our water quality in this area of Welwyn Garden City is terrible
I'm waiting on a master test kit in the post so that might have a more detailed scale?
I'm not sure where to go from here to help calm down my poor fish, its keeping me awake at night worrying about them!
Thanks so much if you've read this far