Silica toxicity from diatomaceous earth

Anyone know if its possible to use too much diatomaceous earth, causing silica toxicity? Say you coat the surface of your soil with a ton of d.e for bugs and then water it in. I know a lot of people including me put it in their soil mix but can you use too much?

No because it literally takes years for it to break down. DE is actually millions of fossilized diatoms...very small organisms that plankton feed on. The sea floor is full of DE...diatoms make up half of the organic material found in the ocean. All the plants growing in the ocean would have silica toxicity if that were a thing.
Dumping even a thick-ass layer of DE on top of your soil should not affect the plants. Silica takes a really long time to become available to your plants through decomposition. Think years....

Depends as well whether you're dealing with powder form or pebbles / rocks..
powder clumps and clogs imo I wouldn't use it.

great stuff in the right form and amount tho.. pebbles are a treat in my garden.