I have noticed my Rotala Macandra (or at least when I bought them that is what the LFS claimed.) have been melting in the new tank. All the other plants seem to be okay. I was a bit suspicious of not dosing anything at first but the USA Amano distributors claim everything that the plants need are in the substrate plus the nitrite and ammonia spikes.

Perhaps my macandra is melting because of the lack of iron? Or is there iron in the substrate?