Wow I didn't know that.
I just started to keep amano shrimp in the same tank.
But I added them about 6 months ago and haven't noticed anything.

I have 14 neon tetras 4 cherry barbs 2 ottos 3 emerald corys 5 amano shrimp 7 ADF (6 froglets 1 adult)
Count less snails.
and I haven't had any problems.
I use the recommended dose every time I do a water change every 25% 15 days.

and haven't had a problem. I guess I am just lucky.
also on that 46G I use all LED lights.
and my plants do great.
I use the marineland single bright light.