I can't answer for other brands, but I don't know where the idea that there are fertilisers or additives in top soil!!!
I'm currently trying a mix of the tetra pack plant substrate and sand - I'll let you know how I get on (once I persuade the bloody plants to stop floating.... they've got enough lead plant weight to skink a battleship but they still insist on floating free - any tips appreciated on how to anchor them until their roots develop.)
thanks, i just leave new plants floating until they've got a good root system on them and then plant them, a shallow substrate has given me the most problems for planting, how deep is yours?
thanks, i just leave new plants floating until they've got a good root system on them and then plant them, a shallow substrate has given me the most problems for planting, how deep is yours?
About 1.5" of sand/tetra mix.
It's only one plant now which has decided to keep floating... but this is with no fishes in yet to upset things... though if the water test shows good today that might change (the filter is running 50% new media, 50% old media from my other tanks).