rock replacement

Saltybumfuzzle_

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So I came to learn that the lfs around me aren't very good and I didn't trust them enough to buy their live rock. One of them even refused to sell me a piece, becuase it was "too big" for my tank and separating it into smaller sections to scape my tank was "a dumb idea". At the time I couldn't find a trustworthy place to get quality rock from, so I ended up buying Caribsea "life rock" because it was my only decent option at the time. But now that my tank is set up and I've found some new lfs, even though they're over an hour away (which I'm okay with) and I'm adding corals, I'm starting to really not like this fake purple rock. It's affecting the look of the tank by making everything all blend together into this boring purple color.

I plan on replacing the rock and I have a plan, but while this definitely isn't my first reef tank it is my first time using this rock and also going to try replacing rock in a cycled tank. I'm just posting to see others' experience replacing rock and I think the method I came up with would be the best course of action to take. But I always welcome outside opinions and suggestions.

I plan on buying a 5 gallon bucket and adding the rock I plan on using and putting a small pump from my filter, feeding water into the bucket. I'll have a couple PVC fittings come out of a hole about 2/3 of the way up the bucket, so as the water comes into the bucket and flows over the rocks and circulates back out basically as an overflow. I don't have a sump on this little tank and I definitely don't have room to add these into the back compartment. But I also can't just remove 90% of my nitrifying bacteria, by just replacing all the rock. I figured having this system setup for a few weeks would allow the bacteria to populate the new rock and then I would be able to scape with the new rock and then put the existing rock into the bucket and remove a piece of the old rock out of the bucket once every few days, or so. This way slowly removing the old rock at the end, would cause the bacteria population to adjust accordingly, while also staying stable enough to support my system.

Hopefully my drawing will make sense :face-with-tears-of-joy: I just don't like the unnatural look and I just hate how it makes my whole tank and corals look like one big glob of purple. The first photo is with natural sunlight beaming through the window and the other photo is the tank alone with my Ai Prime, but my phone camera sucks and it makes it look way more blue than it is.

IMG_2543.jpg canvas.png IMG_2573.jpeg
 

KrisReef

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So, based upon your drawing I think you might not want to do this exactly.

If you get fresh out of the ocean live rock, or old rock from someone elses aquarium that rock will often have things on it that can die off and pollute the water in the tank. Having the two tanks connected could bring injury to your current tank.

You can set up a second tank or bucket and simply use water change water from your existing tank to seed the liverock (or dead rock) and let the second tank rock run its course for a month or so (no light) so that any die off is past and handled by the bacteria in the system.

If you get actual, wet live rock, the same will happen and you don't need to add anything, just put the rock wet into the bucket and leave it with circulation running for a month and exchange away. I have buckets of rock running all the time and pull rocks for exchange purposes as needed.

The new rock may grow algae once it comes into the light, the uglies do their thing and life evolves.
 

56longroof

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I'm confused at to why you don't just add the new rock to the tank? Let it sit in there a month or two then redo your aquascape. I think your putting too much thought into it.
 
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Saltybumfuzzle_

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So, based upon your drawing I think you might not want to do this exactly.

If you get fresh out of the ocean live rock, or old rock from someone elses aquarium that rock will often have things on it that can die off and pollute the water in the tank. Having the two tanks connected could bring injury to your current tank.

You can set up a second tank or bucket and simply use water change water from your existing tank to seed the liverock (or dead rock) and let the second tank rock run its course for a month or so (no light) so that any die off is past and handled by the bacteria in the system.

If you get actual, wet live rock, the same will happen and you don't need to add anything, just put the rock wet into the bucket and leave it with circulation running for a month and exchange away. I have buckets of rock running all the time and pull rocks for exchange purposes as needed.

The new rock may grow algae once it comes into the light, the uglies do their thing and life evolves.
Sorry, I forgot to add that part. I meant to add that I was going to use dry white rock and a 5 gallon bucket with a lid to keep light out and minimize evaporation
 

DO YOU THINK TECHNOLOGICAL ADVANCEMENTS ARE MORE HELPFUL OR HURTFUL TO REEFING?

  • More helpful.

    Votes: 59 42.4%
  • More hurtful.

    Votes: 5 3.6%
  • I think it depends mostly on the technology.

    Votes: 53 38.1%
  • I think it dependsmostly on the reefer behind the technology.

    Votes: 41 29.5%
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