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Tigerbarb
02-08-2008, 03:11 PM
Does anyone know how to build a cave out of lava rocks? I have two pieces with holes in them for fish to swim through. I would want to put the cave in one of the corners of my 10g.

hpt84
02-08-2008, 03:20 PM
If you get a pot, you can silicon lava rock to it. You can buy a big bag of lava rock in the grilling section.

Tigerbarb
02-08-2008, 03:26 PM
Would that make it look natural though? I want it to look like a cave in by a rocky shore in the ocean.

Colin
02-08-2008, 03:39 PM
Interesting.

I dunno what Lava rocks are but you can use guttering fall pipe bends to create a tunnel system. Obviously it depends on the size of fish and what fish. My clown loach love it and they all get inside for sleepy time but the barbs wont go in it at all. RTBS goes in as well as plec and catfish. Once the tunnel system is built place it into the tank, place your rocks and backfill with gravel.

Word of advice, use slight bends and not 90 degree bends, 45 degree is good.

Somone told me that fish like caves with 2 entrances, one way in and one out. Apparently they like to defend one and use the other as an escape route.

Next time i set up a tank I will use the same method of tunnel/cave making but attach smaller pebbles (maybe 2" dia) around the openings to help hold the gravel back. And next time it will be a tunnel system rather than just a tube with some bends and include turning points and vertical shafts, clown loach seem to love it.

I have used Teraccotta plant pots cut and placed in there side as well but they only get used by the plec and thats only when the pot is nearly full. Seems they like to have close contact with solid objects on either side of them, I think you would call it a crack rather than a cave.

Here you go, this is what I did

http://img525.imageshack.us/img525/9981/cave1qo0.th.jpg (http://img525.imageshack.us/my.php?image=cave1qo0.jpg)

http://img525.imageshack.us/img525/3390/cave2ju6.th.jpg (http://img525.imageshack.us/my.php?image=cave2ju6.jpg)

http://img177.imageshack.us/img177/3826/maintankfullshownnl4.th.jpg (http://img177.imageshack.us/my.php?image=maintankfullshownnl4.jpg)

Really it depends on what use the cave serves, is it to look good or do you want fish to use it, then it depends on the fish, like I said Barbs dont do caves but they like heavy planting, maybe true for tetra as well. What have you got living in the tank??

muffin
02-08-2008, 07:50 PM
I know this isn't exaclty what you are looking for, but I think it may be an option that you could use. If you have the tools...

http://www.cichlidforum.com/articles/diy_featherrock.php

bluekrissyspikes
02-08-2008, 09:28 PM
hey guys! those are some interesting ideas. i was going to post about coconut caves but that's not what he's looking for. i don't know what lava rocks are either, but i have some 'caves' built out of rocks stuck together with aquarium acrylic stuff from the pet store. there more like arches though. lol hope you get the info your looking for

Tigerbarb
02-09-2008, 06:14 AM
I know this isn't exaclty what you are looking for, but I think it may be an option that you could use. If you have the tools...

http://www.cichlidforum.com/articles/diy_featherrock.php
Wow... Never thought of just cutting/drilling holes in rocks... Does seem harder though.
Lava rocks aren't the only stones available. My local petstore also has other volcanic rocks, including tufa.

Halelorf
02-10-2008, 04:23 AM
Here is a really cool DIY slate cave I read awhile ago that I really liked. http://www.plantgeek.net/article_viewer.php?id=6

Colin
02-10-2008, 08:16 AM
Nice link Halelorf. I was wondering whether to use slate in my next tank. I think all those sharp slate edges could be problamatic but still a usefull idea, another one to add to my notebook.
Sooooo many tank ideas, so few tanks lol :help: I have MTS :thumb:

fishfanatic33
02-18-2008, 11:40 PM
I like the slate cave link. Those cave are sweet,and I have a whole creek bed of free slate!