The aquarium stuff is expensive LB
Hi Carol, I'm no expert but I use Wickes 10mm gravel at £3. 09 a bag in my planters and containers.
I remember in the past Geoff Hamilton advising against builders sand as it was often just sourced from beaches and had salt in it. Perhaps nowadays it is washed to remove the salt. I think sand 'cakes' more on top of pots so I prefer the horticultural grit.
builders sand isn't the same as sharp sand, It has a softer feel and is just right to form cakes with addition of cement and stick the bricks together really well.
I think the same applies to sharp sand - that it has salt in it. Having said that. I often use sharp sand rather than horticultural sand with no problems.
Thanks Paula.Conway. I have some 10mm gravel,I'll try that. Carol.
I use sharp sand (the tonne bags from Wickes are salt free (and yes, I have tasted it!)) and have several size sieves so can grade it myself. This is the cheapest method of getting it I could find. I also do the same with bags of 10mm pea shingle which contains all sizes up to 10mm. I get the sharp sand and pea shingle for making concrete so the grit comes as a nice by-product.