Rock on a roll adhesive

[Missouri Lady]

Good morning! We're getting ready to overhaul our koi water garden. I would like to use rock on a roll on the bottom instead of actual rocks. Tired of the gunky maintenance. What adhesive should I use, so it doesn't float to the top and fish can't get under it?
Thank you!

 

[mrsclem]

PL roofing sealant works great but just be aware that the surface will get covered with algae and is very difficult to clean. I have it on the sides of my pond as well as spillway. It builds up a thick coating of carpet algae.

 

[j.w]

@Missouri Lady
Can you see the rocks on the bottom of your pond now? I would think they and the rock on a roll would get covered in green and not be really visible. If I am wrong about seeing the rocks please let me know. How deep is your pond? If shallow than I can see why you could possibly see the bottom.

 

[Mmathis]

Hello and welcome, but I don’t think that is the intended use for this product, and I kinda find it hard to believe this is a serious question.

 

[bagsmom]

Hello and welcome, but I don’t think that is the intended use for this product, and I kinda find it hard to believe this is a serious question.

I can see this being a creative use for it. It would (maybe) be less slippery than liner and would give a rock-ish kind of look. I am going to use it between the bog and pond and I hope it looks as good in real life as imagine it in my mind!