We need way more information.
Tank size and height?
Is low - medium light your goal?
What plants do you want to grow?
Are you planning on using root tabs and / or fertilizing the water column?
or no CO2
Glutaraldehyde or Seachem Excel?
pH will effect nutrient availability. pH's above 7.0 will generally need an Iron Gluconate (Seachem Flourish brand) or a DTPA Iron source. Below 7.0 an EDTA Iron source is fine.
Lights can be cheap, but I need to know what size tank you are dealing with. Sand is 100% fine, and is my preferred substrate for my tanks.