How can I add nutrients under sand?

Lots of you have a particular gravel or sand that you like and understandably so. The problem is sand and gravel contains zero nutrients so whilst the plants may anchor down well, they get diddly squat from it. Sure you can add liquid fertilisers, but lets not forget plants absorb from their leaves and their roots.

Now if you're anything like me, you want to make sure your plants get the best, so that they grow as they should and look in tip top shape. And recently, I've been having a lot of conversations about hobbyists who really don't want to use anything but their chosen sand and they're hell bent on using it! So here's the solution:

This 5L bag has been created by the commercial plant growers and is based on 25 years of experience. Contains more nutrients than you can shake a stick at and is super economical at only £9.99 each (1 bag per 40x60cm base)

Dead easy to use, just pour the bag on the bottom of your tank, spread it about then top with your chosen gravel. Cool heh?