Too Many Rocks?

  1. sirdan89

    sirdan89 New Member Member

    I picked up these big lava rocks for my 29g aquarium. My girlfriend has me worried now if i put too many the aquarium might break. Is this really an issue? Also i suppose I have to worry about falling rocks. Anything I can do to secure them to each other that would be fish safe? I would like to give the fish some hiding spots and also create some height in the tank. I will have a lot of other questions on the forum but lets start here.
  2. OP

    sirdan89 New Member Member

    Also what about rocks against the glass? Is it a bad idea?
  3. bryangar

    bryangar Well Known Member Member

    It should be fine. Lava rock isn’t a heavy rock like other rocks used to aquascape. You should try to have them sit up on each other or support each other. If you want something permanent use 100% silicone. Or you can use aquarium safe epoxy or aquarium safe super glue gel.

    Yeah it might be a bad idea if it’s against the glass.
  4. wrs2

    wrs2 Well Known Member Member

    I had a tank full of rocks that I took for the beach. I mean it was FULL of rocks and I never had any issues. And these were much heavier than lava rock, and they were against the glass in the back of the tank.
  5. J

    Jocelyn Adelman Fishlore VIP Member

    If you are concerned about the weight stressing the bottom you could add egg crate (light diffuser) under the rocks.
    If they’re is a chance of a rock falling I would silicone it in place, or reinforce the area some other way, falling rocks can cause damage to glass/inhabitants.

    Rocks against glass... not “harmful” per se, but a bad idea overall. When you need to clean the glass you will need to move the rock... if it is secured in place by silicone not a huge deal, but realize you won’t be able to get behind it to clean.