they also make flourish which kinda has it all http://www.seachem.com/Products/product_pages/Flourish.html
dosing ferts depends on how your tank is set up. high lights and co2 injection is gonna make your plants use more ferts. if thats the case, buying seachem can get expensive. and a lot of people buy dry ferts and mix them up yourself.
if you have low lights (under 2wpg) and arent injecting co2, then seachem will prob be good enough for you.
also do a little research about which plants your going to use excel with. it will kill some plants
dosing ferts depends on how your tank is set up. high lights and co2 injection is gonna make your plants use more ferts. if thats the case, buying seachem can get expensive. and a lot of people buy dry ferts and mix them up yourself.
if you have low lights (under 2wpg) and arent injecting co2, then seachem will prob be good enough for you.
also do a little research about which plants your going to use excel with. it will kill some plants