Rock Hunting

Namtab

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Sooooo since I couldn't find any rocks big enough at my LFS (and the ones they had weren't the right shape) I decided to go hunting in a creek near my house. I think I got a pretty good amount.
0413171829.jpg

Size comparison next to a 250ml bottle of prime. Still haven't acid tested them yet.
What is good way to sterilize them besides scrubbing?
 

KinsKicks

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Boil them for sure. Basically treating them like anything else you find in nature and you want to use in your tank
 
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Namtab

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Boil them for sure. Basically treating them like anything else you find in nature and you want to use in your tank
Don't they explode if they have air bubbles in them when you boil?
Although I kind of doubt these ones will have any air bubbles.
 

Piaelliott

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Don't boil them, they may explode. Just scrub them with boiling water and do the vinegar test. But they look fine.
 

2211Nighthawk

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Don't they explode if they have air bubbles in them when you boil?
Although I kind of doubt these ones will have any air bubbles.
Good grief. I know thats why you can put rocks by/in fire cause they'll explode but I didn't think boiling would do that. Cement will do that too. I think (in theory) straight up fire is how enough to weaken the rock a bit so the air bubbles CAN explode. Boiling I don't think will get hot enough. But I never boiled any of my rocks, just super hot tap water.
And if all else, use a lid and duck.
 

Piaelliott

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I guess. I have never bleached a rock, I don't even have bleach at home. I don't see the need to bleach rocks but if you do, I would soak them in conditioned water afterwards to get rid of residual bleach.
 

James17

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Don't bleach them, you may not get it all back out.
I'd clean them with a brush then pour boiling water over them and let them sit a while.
 

Jnx

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Seriously, take it from a first responder- boiling temps can definitely cause a rock to explode, and if they do, a lid will not help you. The force can be enough to send shards through the pot itself. Rocks are not homogenous, and the different densisties do not take well to quick, uneven heating, whether it be campfires, boiling, housefires, etc. Do not boil rocks!!! Ever!

I use river, stream, and field stone. White vinegar's always done the trick for me. I haven't had any issues. The only thing I'd recommend is to dry the rocks completely before cleaning or soaking with the vinegar. This just ensures that whatever hitchhikers there are dry out.
 
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Namtab

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Seriously, take it from a first responder- boiling temps can definitely cause a rock to explode, and if they do, a lid will not help you. The force can be enough to send shards through the pot itself. Rocks are not homogenous, and the different densisties do not take well to quick, uneven heating, whether it be campfires, boiling, housefires, etc. Do not boil rocks!!! Ever!

I use river, stream, and field stone. White vinegar's always done the trick for me. I haven't had any issues. The only thing I'd recommend is to dry the rocks completely before cleaning or soaking with the vinegar. This just ensures that whatever hitchhikers there are dry out.
So pretty much I should
1. Dry the rocks
3. Scrub them with a brush or sponge
2. Soak them in vinegar to see if they bubble
4. pour boiling water over them to sterilize

I need to find a good place to hunt for non-rounded rocks.
 

scarface

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Would a 10-20% bleach solution and then boiling water work?
I have always been fine with a hot water scrub under the faucet. Boiling is overkill and dangerous. If you still want to do it, then wear a ballistic face shield, the kind swat teams use, lol.
 
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Namtab

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I have always been fine with a hot water scrub under the faucet. Boiling is overkill and dangerous. If you still want to do it, then wear a ballistic face shield, the kind swat teams use, lol.
When I said boiling I just meant boil water and then pour that water on the rocks, behind an extendable riot shield.
 
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Jnx

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Yeah, that's what I do, and I have no rocks exploded in the process.
Just be careful.
Just because it hasn't happened to you doesn't mean it won't or can't, and be disasterous when it does.
Ie: I see people jump start cars the wrong way all the time, and when I try to tell them to ground on the frame, they always say, "Oh, it won't explode if I do it this way". Except for the one time I saw a battery explode, and the man who hooked up the cables incorrectly (positive to positive, negative to negative) sustained third degree burns to 80% of his face and one hand, and lost an eye in the process.
It only takes one time.

Edit: I also don't see the actual benefit of pouring boiling water over the rocks. The water will not only cool past having a sterilization effect immediately, it will also not get in all the pores it needs to. I recommend the vinegar, as it is not at all dangerous, and you can soak the rocks in it for maximum benefit.
 
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Namtab

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Just be careful.
Just because it hasn't happened to you doesn't mean it won't or can't, and be disasterous when it does.
Ie: I see people jump start cars the wrong way all the time, and when I try to tell them to ground on the frame, they always say, "Oh, it won't explode if I do it this way". Except for the one time I saw a battery explode, and the man who hooked up the cables incorrectly (positive to positive, negative to negative) sustained third degree burns to 80% of his face and one hand, and lost an eye in the process.
It only takes one time.

Edit: I also don't see the actual benefit of pouring boiling water over the rocks. The water will not only cool past having a sterilization effect immediately, it will also not get in all the pores it needs to. I recommend the vinegar, as it is not at all dangerous, and you can soak the rocks in it for maximum benefit.
Alright, I need to go out and get more vinegar then LOL (will still be using the riot shield )
 
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