Hey just wanted to ask if its okay to use this to cover my pond plants in my fish pond and wildlife pond? I'm sure I read Horticultural grit it poison to fish, but not sure to wildlife?
I use RHS horticultural grit for my pond baskets states Lime free washed granite angular grit.Ideal Uses: Adding to composts, Ponds & aquatic planting, Alpines & rock gardens, Improves drainage & aeration to help roots grow deeper and produce stronger plants., never had any problems
Can't see how grit could be poisonous
Not sure the definition of grit, but if the small stones are dis-solvable - like chalk - then I guess you could have a problem.
Mind you I just read this: http://www.framlinghamfisheries.co.uk/chalk.html which implies chalk can be good for fisheries.
Chalk streams are hugely important wildlife habitats ... can't see how chalk can be a problem.
Wayside says:Mind you I just read this: http://www.framlinghamfisheries.co.uk/chalk.html which implies chalk can be good for fisheries.
See original post
Forgive the pun, but I think that article refers to a whole different kettle of fish
H/grit is usually granite chippings but I got some recently which is more gravel-like and def. not granite.An easy way to check if there is something in there you don't want in your pond - take a small sample (very small handful) of the grit, put it in a saucer and pour on some vinegar, if you see a stream of little bubbles rising to the surface for a while, then it may not be suitable. But being realistic, you're not going to adding huge amounts anyway, so it's unlikely to have any effect whatsoever.
Chalk in moving water like streams is fine of course, the problem with a contained body of water like a pond is that rainwater is slightly acidic and little by little it will dissolve the (alkaline) chalk and raise the pH of the water possibly to a dangerous level