Sand?

Actually I have used up play sand and it was ok....not limey. And builders sand left outside in the rain (with a hole a the bottom of the bag) to wash was also usable!
Have finished both now.
But now, I can't carry any big bag, so that's the problem.

Ps you need horticultural sand or sharp sand not builders or play sand

Oh I totally misunderstood so as you were!

Sand is OK as is perlite or vermiculite

Will try both - thanks.

I got very small bags of sand and of grit last year from the garden centre. Perfect for bringing on the begonias.

Perhaps try a pet shop that sells stuff for fish tanks, they may sell smaller quantities.

I have pearlite and don't like it! It floats on watering and goes brown on the surface of pots - messy and not very controllable....

i can not remember where I last got sand.

Yes agree Pompa

Use pearlite instead of grit much lighter and improves drainage like grit. Obtainable from garden centres.

B&Q have Horticultural Grit in 1 litre bags, 1.6kg but it's £6.95....too much.

Not compost bin but compost for seedlings!

Definitely go to a garden centre/shop or hardware store bound to get it there, not sure how much though. Why do you want to put grit in the compass bin anyway, I don't put any in mine and I have just empties it out and it is fine.

...No Mothercare here....

Can you get grit in small bags???

Grit would be better

Would a small bag of sand pit sand do? I'm sure you used to be able to buy this from Mothercare.