For fert tabs I really don't think there's much of a difference. I compare contents of the ones the lfs has and it seems all the same. I use what ever is on sale. I haven't been doing plants that long so take it for what it is.
So here's my 2¢. LFS's seem to only carry crap, at least where I live and apparently others too. I got some API Root Tabs because that's all I could find locally. Once home, I compared the analysis of them to that of SeaChem's Flourish Tabs, and Flourish has several more minerals in it. Here's a breakdown:
- Total N=3%(water soluble N .53%)
Derived from Urea Formaldehyde
, Mono Potassium Phosphate, Iron EDTA (Ferric ethylenediamine tetraacetate)
- N =0.28%
Available Phos = 0.17%
Boron = 0.029%
Sodium = 0.14%
Potassium Chloride, Calcium Sulfate, Copper Sulfate, Magnesium Chloride, Ferrous Gluconate, Cobalt Sulfate, Magnesium Sulfate, Manganese Sulfate, Boric Acid, Sodium Molybdate, Zinc Sulfate, and Protein Hydrolysates.
OK, well that was fun to type (not really, so I hope this helps someone!). I will definitely be getting my money back on the API stuff and ordering some Flourish for about $1 more. It seems worth it to me. Flourish has less N, but since I keep fish I think that's a mute point. For more K I am going to add Flourish Potassium, and I'm also going to use FlorinMulti and AquaVitro Envy. But I suppose since they are so different, you could use both brands of tabs.