Using Live Sand While Curing Live Rock

renogaw

Active Member
don't think it would be all that good of an idea, but might be ok. how "live" is the sand? did you get it out of a bag or someone elses or lfs's tank?
 

lil.guppy

Active Member
I have that 20lb bag un-opened of that bio active live sand. Figured it would help speed up the curring process to help keep as much stuff alive as possible
 

renogaw

Active Member
that's why i asked if you had bagged sand.
you'll want to cure that as well. reason being: you'll spike ammonia when you put it in.
reason: you have a ton of anaerobic bbacteria living in there since there's no air. once you expose it they will die.
 

lil.guppy

Active Member
So why when I moved down here I used 40lbs of brand new bags in my aquarium with no ammonia present?
 

lil.guppy

Active Member
ok when I moved I threw out my old sand. I put my live rock in there and put 2 brand new un-opened bags of that bio active sand. I never had any ammonia or nitrate/nitrite or ph problems. So wouldnt it be the same if I put it in the curring rock bucket? My only concern would be that since the ammonia is high in the bucket it would kill off the live sand before it could do anything.
 

katsafados

Active Member
I'm dealing with anaerobic bacteria in my microbiology lab now. I dont think it can grow in the sand bad. There has to be absolutly no oxygen in a medium inorder for it to grow. That being said, I'm sure the bag of sand still has traces of O2 which means theres alreay die off in the bag of sand, and with the hash conditions of the enviroment its in (not the largest amount of nutrients since its in a closed enviroment(nothing comming in or out, except for the initial packaging)) I doubt theres enough of them to cause a detectable ammonia spike due to the fact that they cant reach colony levels. If there was that many of them in the bag youd see them(they look like a milky colour and jello-like in colonies).
I'm going based on what I did in my lab using anaerobic bacteria, so I might be wrong. The media we used was Thioglycollate broth, which has reducing agents(eliminate O2), agar (limits diffusion), resazurin (a dye that acts as an O2 indicator). The bacteria would only accumilate and multiply near the bottom of the test tube, since there was zero oxygen there. It also had perfect conditions to multiply which I doubt it would have in a bag of sand (incubated at 37C, tons of nutrients, and absolutly no O2). But then again theres other types of bacteria that only require little amounts of O2 to grow(only 5-10%), but I think those would have a hard time also once the O2 is gone i nthe bag.
When I first set up my tank I cycled it with uncured live rock and live sand, but I added it straight to the tank (together). So I cant really say if the sand gave me an ammonia spike alone.
Therefore, I'm not sure about this, but from what I know I doubt theres enought anaerobic bacteria in the bag of live sand to cause a noticable ammonia spike.
ONE AGAIN I'M NOT SURE, you might want to research more before doing anything, but if you said that you added the new sand into your tanks before and its the same brand, that gives you a little more hope for it.

But like Henry said, why use live sand to cure the LR?? Just get a piece of cured LR from your tanks and throw it in the bucket to seed it.
 

renogaw

Active Member
depends on how long the sand has been around. i've seen some sand that has started to grow the bacteria on the plastic of the bag. dark box, sand, no oxygen and multiple multiple complaints about ammonia spikes from adding the sand makes me believe there's some anaerobic bacteriaa
 

bms

Member
lil guppy, when you say that you had no ammonia spike, did you do as many water changes when you added the sand as you did when you said you cured your live rock in 5 days? because if so all those water changes are only going to keep diluting the ammonia and nitrite levels because you are just removing and adding fresh water. it would be very hard to accurately test the levels your tank is producing if you keep removing the water everyday.
 
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