GSP Attachment Time?

[Aspect]

Anyone have a rough idea of how long GSP takes to attach to glass or rock? I'm curious I've had a frag of GSP on a piece of my rock for a month and it isn't attached. My xenia attached in literally 24 hours so I thought the GSP would be similar.

 

[blaxsun]

Usually very quick.

 

[mrpontiac80]

Mine took a while. It was on a small piece of rock and I just placed it against the rear glass. I can’t recall how long but a few weeks for sure. Once it attached, it was growing but nowhere near as quick as I expected. Fast forward a couple of months and now you can notice it expanding every day.
my lights are about to shut off so it is closing up for the night but here it is tonight

and here it was feb of 2022