Yesterday I have added some new plants (Alternanthera Lilacina), and today already they have schredded leaves, this happens everytime I add new plants even when I net all the fish out. My ph level is normal (between 6 and 7). And phosfate and nitrate levels are around 0. I also have co2 injection. And even with co2 injection I don't get the bubble effect on the leaves of any of the plants. Can enyone tell me please what's wrong?