I use Flourish, it is comprehensive. It does increase growth and health IMO. I suspect the disasters encountered in the previous post may be due to a lack of one or more nutrients and excess of others.?? This is easily done when dosing elements individually and not testing to see where levels are @. I would refer to the thread entitled "shoddy planted attempt", artdale does a great job of explaining the "limiting factor" theory. There is also useful info. on CO2 and Seachem's Excel there. As for the diatom algae, that just happens in any tank, I don't think the Flourish had anything to do with that. If you don't get some of this type of algae on the glass from time to time something is probably not right. You just need to clean the glass every once in a while. If it is out of control then your phosphates and silicates are probably too high, or you could again be lacking some element and the plants are therefore not using the phosphates like they should be. I would really read that other thread, artdale knows his stuff!!
--Tim