Hi kitty,

Firstly, how are you measuring CO2 and what lighting do you have?
Secondly, if your tests are correct (any many test kits aren't that good) you are showing Fe=0.
What you have sounds a little like a K or FE shortage. However, with what you're dosing it doesn't appear to be, so I would say CO2. You could also do with more KNO3.
Are you sure of your CO2? Do you have a drop checker to measure it or are you relying on pH/CO2/KH tables?
Try increasing it slowly over the next few days, watch the fish in case they start heading for the surface gasping.

Also, your tap water going in is quite hard, you're dosing Epsom salts yet you have tank reading a third less?

The little brown dots on the leaves may well be snail eggs or a few diatoms.