Currents in freshwater question

[ambrosia04]

Hi! I put my filter a bit high at first so it could do the oxygen exchange without an air pump (?)
I don't know if it's too much right now my stocking plan is:
12–15 Boraras merah (or chili rasbora)
6–8 panda corys
1 honey gourami
10–15 neocaridina
2–3 amano
3–4 clithon

Maybe I could lower the filter when I do a big water change for the end of my cycle? Or put in more water? I don't want it to overflow when I put my hand in though.
Idk if I should top off the water while in the cycle either (I'd add it at the same temp and with dechlorinator already added but still idk bc rn I'm testing to see if it processes ammonia in 24h and prime dechlorinator seems to also manage nitrite and I don't want a false positive)
Video of the flow attached (I had to put it diagonally because my hornwort were getting flattened by it xD)

 

[GaryE]

How big's the tank? That's a lot of fish for what the photo suggests.

Honey gouramis are swampy water fish, but even they deal with currents and wind on the water. That's a tiny looking filter, and it seems well placed. The fish you want could do fine with two of those filters moving water. You won't have a problem.

 

[ambrosia04]

How big's the tank? That's a lot of fish for what the photo suggests.

Honey gouramis are swampy water fish, but even they deal with currents and wind on the water. That's a tiny looking filter, and it seems well placed. The fish you want could do fine with two of those filters moving water. You won't have a problem.

It's a 75x35x40; it's a 105 L (27.74 Gallons) which must have like 94.0 Liters or 24.8 Gallons of real water volume.
I also may want some otos in the far future when it's more mature so idk if adding too many fish now is a bad idea.

It's still a WIP but my calc says without the 6 otos is fine (I accept changes to the formulas hahaha, if anything is wrong please tell me!)