My only advice is to watch your plants very carefully over this next 2 months. The first few weeks after you introduce a plant into a tank it will be using whatever nutrients it had in its reserves. If your tank is not providing something (light, ferts, co2, whatever) then you will notice it if you are paying attention and hopefully quick enough before its too late. The leaves that are on the plants when you buy them are not very important, its the new leaves that are forming that really matter. Look at those to see if they are growing correctly etc.