I wouldnt glue those rocks. They are not stacked high at all, plus they look big enough to not be a falling issue. Also, I mean no disrespect,or offense, TwoHedWlf, cuz its just my opinion, but I will never put rocks directly on the glass. That's a recipe for disaster, if the weight of the rocks are on an edge or point, and against the glass, it could crack the bottom, if theyre heavy enough. Spreading the weight is always a good idea. I'm sure I won't be the only person that will advise this. Its best to have something under them, like the ever popular "eggcrate". I personally don't care for egg crate, its just too thick and looks crummy when exposed too easily, with diggers. I used to use thin foam glued to the parts that touched the glass. Recently I discovered a thing called needlepoint backing from a craft store. I actually tried it , and I have to say.....Its the best thing I ever tried, for several reasons.oOturquoiseOo said:This is what I'm doing with the rocks so I don't have to be too concerned about silicon showing. I just want to make a few hiding places.
I think you'll really like using it. It is quite handy. If you're worried about your crushed shrimp haha.... just anchor your rocks to it as well! You can glue them in place outside the tank , then put it all in as one unit after it dries.oOturquoiseOo said:Thank you! I was a little worried about rock right on glass but I am also worried about squished fish/shrimp. Haha! I'll take your advice and glue some of that to the rocks and do it that way. We always called it plastic canvas. My mom used to be really into it in the 80's. Haha! I have a sheet somewhere around because I bought some to teach my son to sew.