Treating new-used live rock

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Joined
May 16, 2006
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Spokane, Washington, United States
Okay, I picked up about 40ish pounds of live rock in a trade last night. It's pretty nice looking Tonga rock. It had been stored in saltwater in a couple coolers with no circulation. I don't know how long it was stored in that way but I don't think it was very long. In looking closely at some of the rock, I've seen a couple live Peanut Worms. I'm also seeing quite a few feather duster tubes and have spotted a couple bristle worms and quite a few copopods crawling around o it. About 3/4 of it has good coraline coverage. When I got it home, I emptied out off of the old water, mixed up about 15 gallons of fresh saltwater and have it in a garbage can with a powerhead circulating. Instead of wasting valuable RO/DI water...lol, I mixed up the fresh SW using tap water. I now see this may have been a mistake...lol. Just for kicks, I decided to test the water this morning. Nitrates are at about 40 ppm. This is actually a lot higher than my tap water though, which is at about 20 ppm. So, I'm obviously getting existing nitrates from the rock.

Any suggestions on how to treat this rock before adding to any of my tanks? I've looked over each and every piece of rock quite carefully and so far, I've seen no bad pests, although that doesn't really mean anything at all. As I said, there's pretty good coraline growth, some good critters and maybe a little turf or hair algae growth that I'll attack with a toothbrush.

Should I dump out the SW and make up a fresh batch using RO/DI water? It's really not a big deal to do that, last night I just decided that since I only had about 15 gallons of RO/DI water and planned a couple water changes over this weekend, that I'd use tap water. I can easily hook up my RO unit and fill up the can. If I do a water change in the rock, I'll also brush off the algae and swish the rock out very well in the old water before placing it in the new. Eventually this rock is going to add to my display tanks and some smaller pieces will go in my fuge. I'd like any and all suggestions before making the addition though!! Thanks all!!
 
take the powerhead and blow into all the holes and crevaces in the rock to get rid of any dead stuff or loose organic material. mix some new salt water with rodi and do a water shange in the main tank and use that water to add to or change in the curing tub. if it was without circulation and heat there will be some die-off. make sure to age the new saltwater whether its going in the curing tub or the main tank. if you have another skimmer run it on the curing tub. if you dont get one. i have one you can borrow but my wife had surgery this week and i cant back get to spokane for at least a couple days now that i have her back at home. even when the rock is fully cured it should be added to an existing tank slowly just like water changes. that way you dont get something too far out of balnce if the bio in the rock is not the same as the tank.
 
Thanks for the advice. I sure hope your wife is doing alright!! I'm not in a big hurry to get it done. I do have a couple water changes to do this weekend so I'll use that old water to do water changes in the rock tub as well. I'll do a few water changes in the rock tub over the next week or so and see how that goes. I will definitely blow off and blow out any detritus and give the rock a good blasting. Heck, I can even hook up my Magnum 350 cannister filter and run it in the rock tub with a micron filter. I may add another powerhead or 2 to get things real turbulent in there too!!
 
Nice deal Mike. I'm looking forward to seeing how you arrange it in you main tank! If you have any extra, give me a call. Ill buy some from ya.
 
id say use RO water.... (algea pre ignition)

water changes++++++

set up a qt tank kinda thing for it.... give it some time b4 adding it to.
 
Keeping it dark is preferable. The coralline requires no light, but the darkness keeps pest algae from taking advantage of the high nitrates while it "cooks"
 
agreed....

the coraline will probly do better with little light... (i dont know about total darkness) but the little or no light will help in keeping the algae down..

altho it mgiht be better to get the algea, to grow and get it over with b4 you add it 2 your system
 
It won't have NO light. It'll be in an open container so will get ambient lighting from the house. There's really not much algae at all on it. It was kept in closed coolers so got NO light at all for awhile. Might have already killed off any algae that existed. The little bit that's on there doesn't really worry me much as I've got a Yellow Tang and a Foxface. Right now, I don't have enough algae in my 75 for the Yellow Tang and am transferring rocks from my pod tank to the 75 to supply algae.
 
I did my second 100% water change last night, using water from my reef tanks. As of right now, I have <10 nitrates. From the results I got, it's between 0 and 10 but closer to 0. I'll do a couple more WCs over the next couple days and see where I'm at. If I'm still getting very low readings, I'll wait a few days on a WC and then test again. Getting closer!!
 
Well, in looking over the rock very carefully, I'm not seeing any sponges at all...although that doesn't mean they aren't there. The rock looks very clean and has featherdusters that are living, I doubt I'll get any die off of those. I've also seen a couple peanut worms and bristle worms. Supposedly there may be a large tiger striped brittle star in there too...lol. Sure didn't see any signs of it anywhere. I'm hoping to not get any die off. I think it probably already happened when the rock was in an insulated cooler in the dark for awhile. The water was pretty foul...lol. When I got it home, I got rid of ALL of that water, rinsed each rock well in new SW, before submerging in water with a powerhead. I've now added another powerhead and have done water changes every day. Up until last night's WC, I was getting higher nitrate levels within about 10 hours of the WC. It's now been about 14 hours and I'll test it again this evening. I'll do another WC either this evening or tomorrow.
 
It came from another tank. The guy was downsizing from a 55 to a 29. He purchased a used 29 that came supplied with live rock so was getting rid of everything from his 55. I got a great deal on it. It had been stored in an ice chest but I don't know how long. As I mentioned, the water stunk pretty bad...lol. After the first water change, the smell went away though. Smells like good live rock now...lol.

Picture in your head, me standing over a garbage can, pulling live rock out one piece at a time, looking it over very carefully and then SNIFFING it!!! Been doing that several times a day....lol.
 
nice! I can just see you doing that! the things we do for our tanks eh? I HATE seafood, as I grew up on the sound and went geo-ducking on our beach (two fingers in the ducks neck and digging with the other hand, forget trash cans!:)) anyway, you would never catch me eating anything from the water and now I handle fish food every day!
 
I think I'd just boil it and not take any chances. It will mature quickly once you get it in your tank.

Don
 
Boil it??? But then I'd loose all the good life that's in it...including tons of great lil' feather dusters. I'd rather just QT it for a bit.

Yup and the bad. All the good stuff is cool but the bad stuff that youll never see in the qt isnt cool.

Don
 
Don't like rocks that have been used, had bad problems, you can try cooking it in a dark container for a few months, putting them in a lighted QT tank for a few months & see what appears might not see everything or do like Don said. I saw where a cup of bleach in a tub of water overnight will turn it super white, then they rinsed it out throughly & boiled it but that would be the extreme, which way is best, well we could debate that a long while & still not gain much. JM2 copper coated pennies:D
 

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