CEverii
Aquarium Advice Freak
... to dig into my sand so my rocks sitting on the glass and not the top of the sand? Tanks only been up for 8 months. Just dont want to stir into something nasty and have a melt down.
It depends on how deep your sand bed is. If it is deeper then 1-2 inches i would try and push the rocks down closer to the glass. The bullet goby probably won't make it unstable enough to topple your rocks but i did have a diamond goby that dug out such a big den that the roof sunk in and i believe it smushed him and the scissor tail goby that share the place with him.
Like mike said. If you do it just make sure you do a water change after and maybe run a filter sock/sponge for a couple days if you have one. You can also just do it a little bit at a time. Start one one end and move around a few rocks each water change until you feel that everything is stable. The chances of anything happening are very small. Like mikes tank you could probably go 12 years and not ever have anything happening but it is easy to fix and i would go the better safe then sorry route.