anyone
Just so you're getting some kind of an answer, I'm a slob and use Flourish.
This is undoubtedly unfashionable and not a tenth as good as any number of name brands I've never heard of and couldn't afford.
Slob or not you are or were using one of the best ferts around. Seachem Flourish is about the best off the shelf fert in the US and Tropica Plant Nutrition in europe. Seachem is very expensive in the UK though.
Therefore you are indeed a lot more fashionable than you thought. lol
To the OP I would ignore all the ferts you find on the chain store shelves and get to a reputable LFS and find some Seachem. Alternatively go on aquaessentials.co.uk and buy Tropica Plant Nutrition+ <----The plus is important.
AC