Well 2.99 for the sand you cant go wrong. Oh and two new buckets at £1.28 each. So im not fussed. Il keep the old gravel JUST incase it doesnt work out.
Sorry they are not the best but that's the only ones iv got with play sand. Only others are of my rio 400 with finer sand before I swapped it for the black Sand
Ive removed 90% of my gravel today and water changed 10% ready for my sand switch over tomorrow. I have asda, tesco and argos all on my doorstep and they all do sand.
I think they will all be pretty much the same so it's take your pic
If the Argos sand is darker now then I think it would look better. Also It always looks a lot darker in the bags (no matter where its from) to what it does when it's in the tank.
Just be sure to rinse the sand (a lot) before putting it in your tank.